English words: pentacontagon to pentaphosphate

300 English words, part 49 of 213 of the words starting with P, A to Z. 9 have a page of their own.

English words pentacontagon to pentaphosphate

pentacontagon noun: A fifty-sided polygon.
pentacontahedron noun: A polyhedron with fifty faces.
pentacontaheptachoron noun: A four-dimensional polytope that has 57 cells
pentacontane noun: Any of very many isomers of the aliphatic hydrocarbon having fifty carbon atoms, but especially n-pentacontane CH₃(CH₂)₄₈CH₃
pentaconter noun: Alternative form of penteconter.
pentacoordinate adjective: Having a coordination number of five
pentacoordinated adjective: coordinated with five (the same or different) ligands
pentacoordinating adjective: Having five coordinate bonds to a metal ion
pentacoordination noun: The condition of being pentacoordinate
pentacopper noun: Five atoms of copper in a chemical compound.
pentacosadiene noun: Any of very many isomeric forms of an unsaturated aliphatic hydrocarbon having 25 carbon atoms and two double bonds
pentacosane noun: Any of very many isomeric forms of a saturated aliphatic hydrocarbon having 25 carbon atoms, but especially n-pentacosane CH₃(CH₂)₂₃CH₃ that is found in beeswax
pentacosanoic adjective: Of or pertaining to pentacosanoic acid or its derivatives.
pentacosanoic acid noun: A long-chain saturated fatty acid having 25 carbon atoms.
pentacosanoyl noun: The univalent radical derived from pentacosanoic acid by loss of the hydroxy group
pentacosene noun: Any of very many isomeric forms of an unsaturated aliphatic hydrocarbon having 25 carbon atoms and one double bond
pentacosiomedimni noun: The highest class of citizens in Ancient Greece
pentacovalent adjective: Having five covalent bonds
pentacrinin noun: Any of various red or purple pigments found in certain crinoids of the former genus Pentacrinus, for example one sea lily now named Neocrinus naresianus.
pentacrinite noun: Any crinoid of the genus Pentacrinites.
pentacrinoid noun: A larva in a certain stage in the cycle of a comatula, and similar species, when it is still attached by a stem.
pentacron noun: A solid with five summits (vertices), such as a square pyramid
pentacrostic noun: A set of verses arranged so that the name of the subject occurs five times, the whole set of verses being divided into five different parts from top to bottom.
pentact noun: A pentactinal structure, one with five rays.
pentactin noun: Alternative form of pentactine.
pentactinal adjective: Having five rays
pentactine noun: A pentactinal spicule of a sponge
pentacube noun: A polycube composed of five cubes
pentacular adjective: Of or relating to a pentacle.
pentaculum noun: pentacle
pentacuspid adjective: Having five cusps.
pentacuspidate adjective: Having five cusps
pentacycle noun: A five-wheeled pedal cycle.
pentacyclic adjective: Having five rings, especially five fused rings as in many triterpenoids.
pentacyclization noun: Formation of a pentacyclic compound.
pentacyclosqualene noun: A pentacyclic triterpene hydrocarbon (hydropicene) formed from squalene
pentacylindrical adjective: Composed of five cylinders
pentad noun /ˈpɛnˌtæd/: Synonym of quinquennium: a five-year period, especially in reference to the first and second halves of calendrical decades.
pentadactyl adjective: Having five digits on a limb.
pentadactyle adjective: Alternative form of pentadactyl.
pentadactylic adjective: pentadactylous
pentadactylism noun: pentadactyly
pentadactyloid adjective: Having the form of, or a structure modified from, a pentadactyl limb; having an underlying structure that is a limb with five digits (although these may be...
pentadactylous adjective: pentadactyl
pentadactyly noun: The condition of having five digits (fingers or toes) on a limb
pentadal adjective: Of or related to a 5-year period.
pentadec- prefix: Alternative form of pentadeca- used before a vowel.
pentadeca- prefix: fifteen
pentadecacopper noun: Fifteen atoms of copper in a compound.
pentadecagon noun /ˌpɛntəˈdɛkəɡən/: A polygon with fifteen sides.
pentadecagonal adjective: Having the form of a pentadecagon
pentadecahedral adjective: In the form of a pentadecahedron.
pentadecahedron noun: A polyhedron with fifteen faces.
pentadecahydrate noun: A hydrate containing fifteen molecules of water per molecule or unit cell.
pentadecamer noun: An oligomer having fifteen subunits.
pentadecameric adjective: Of or pertaining to a pentadecamer
pentadecanal noun: The aliphatic aldehyde that has 15 carbon atoms
pentadecane noun: Any of very many isomeric saturated aliphatic hydrocarbons having fifteen carbon atoms; but especially n-pentadecane, CH₃(CH₂)₁₃CH₃
pentadecanoate noun: Any salt or ester of pentadecanoic acid.
pentadecanoic adjective: Of or pertaining to pentadecanoic acid or its derivatives.
pentadecanoic acid noun: The aliphatic carboxylic acid having fifteen carbon atoms
pentadecanoin noun: Any glyceride of pentadecanoic acid
pentadecanol noun: A saturated aliphatic alcohol that has fifteen carbon atoms, but especially 1-pentadecanol
pentadecanone noun: Any of several isomeric aliphatic ketones having fifteen carbon atoms
pentadecanoyl noun: The univalent radical derived from pentadecanoic acid by loss of the hydroxy group
pentadecaoxide noun: Any oxide containing fifteen atoms of oxygen per molecule, O₁₅.
pentadecapeptide noun: An oligopeptide composed on fifteen amino acid residues
pentadecasyllabic adjective: Synonym of quindecasyllabic.
pentadecathlon noun: A sporting event consisting of fifteen different sports or contests.
pentadecatoic acid noun: An acid related to pentadecane.
pentadecene noun: Any alkene that has fifteen carbon atoms and one double bond, but especially 1-pentadecene or cis 7-pentadecene
pentadecenoate noun: Any salt or ester of pentadecenoic acid
pentadecenoic adjective: Relating to pentadecenoic acid or its derivatives
pentadecenoic acid noun: Any aliphatic carboxylic acid having fifteen carbon atoms and one double bond
pentadecenoyl noun: The univalent radical derived from pentadecenoic acid by loss of the hydroxy group
pentadecimal adjective: Based on the number 15; using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D and E.
pentadecyl noun: Any of very many isomeric univalent hydrocarbon radicals, C₁₅H₃₁, formally derived from pentadecane by the loss of a hydrogen atom
pentadecylic adjective: Relating to the pentadecyl radical
pentadecyne noun: Any alkyne that has fifteen carbon atoms
pentadelphous adjective: Of a flower or plant: having its stamens fused together at least partly by the filaments so that they form five separate groups, some of which may contain a...
pentadelphy noun: Presence of pentadelphous stamen.
pentadentate adjective: Forming five separate chemical bonds to a coordinating metal ion.
pentadeuterated adjective: deuterated in five positions, or with five atoms of deuterium
pentadiagonal adjective: In which the only nonzero entries are on the main diagonal, and the first two diagonals above and below it
pentadic adjective: of, or relating to a pentad
pentadicity noun: The property of being pentadic.
pentadiene noun: Either of two isomeric dienes derived from pentane
pentadienoate noun: Any salt or ester of pentadienoic acid.
pentadienoic adjective: Of or pertaining to pentadienoic acid or its derivatives
pentadienoic acid noun: The unsaturated aliphatic carboxylic acid CH₂=CH-CH=CH-COOH
pentadienone noun: Any aliphatic ketone that has five carbon atoms and two double bonds
pentadienyl noun: Any univalent radical or ion derived from a pentadiene
pentadin noun: A sweet-tasting protein found in the climbing shrub Pentadiplandra brazzeana.
pentadodecahedron noun: a regular dodecahedron having twelve pentagonal faces
pentadrachm noun: An ancient Cyrenaic coin that was worth five drachmas.
pentadrachma noun: Alternative form of pentadrachm.
pentaene noun: Any compound having five carbon-carbon double bonds
pentaenoic adjective, noun: Relating to any pentaenoic acid or its derivatives
pentaenoic acid noun: Any polyunsaturated fatty acid that has five double bonds
pentaerythritol noun: The polyhydric alcohol 2,2-bis(hydroxymethyl)1,3-propanediol C(CH₂OH)₄
pentaerythritol tetranitrate noun: A potent, water-soluble high explosive, prepared by nitration of pentaerythritol.
pentaerythrityl noun: The tetravalent radical derived from pentaerythritol
pentaethylacetophenone noun: A chemical compound, C₁₈H₁₃O.
pentaethylenehexamine noun: The polyethylene amine H₂N-CH₂CH₂-NH-CH₂CH₂-NH-CH₂CH₂-NH-CH₂CH₂-NH-CH₂CH₂-NH₂.
pentafid adjective: Divided or split into five parts.
pentaflake noun: A fractal formed by arranging clusters of pentagons around a central pentagon
pentafluoride noun: Any fluoride containing five fluorine atoms in each molecule.
pentafluoro noun: Five fluorine atoms in a molecule
pentafluorobenzoic adjective: Used to name the pentafluoro derivatives of benzoic acid
pentafluorobenzoyl noun: The 2,3,4,5,6-pentafluoro derivative of the benzoyl radical
pentafluorobenzyl noun: A form of the benzyl radical in which each of the hydrogen atoms of the benzene ring has been replaced by fluorine
pentafluoroethane noun: A refrigerant and fire suppression agent with the chemical formula CF₃CHF₂.
pentafluoroethyl noun: Any pentafluoro derivative of an ethyl group
pentafluorophenol noun: A derivative of phenol in which the five hydrogen atoms have been replaced by those of fluorine ( C₆F₅OH )
pentafluorophenyl noun: A phenyl group in which the five hydrogen atoms have been replaced by those of fluorine ( C₆F₅- )
pentafluoropyridine noun: The fully fluorinated derivative of pyridine; it is used in the synthesis of various heterocyclic compounds.
pentafluorostyrene noun: A derivative of styrene in which each hydrogen of the benzene ring has been replaced by fluorine; it is used to make specialized polymers.
pentafluorosulfanyl noun: Any pentafluoro derivative of a sulfanyl radical
pentaformylgitoxin noun: gitoformate
pentafunctional adjective: That has five functions
pentafunctionalised adjective: Having five functional groups
pentafurcation noun: A division into five branches.
pentafuside noun: A synthetic polypeptide intended as a treatment of HIV infection
pentagalacturonate noun: A salt or ester of pentagalacturonic acid.
pentagalacturonic adjective: Relating to pentagalacturonic acid and its derivatives
pentagalacturonic acid noun: A breakdown product of polygalacturonic acid (pectic acid) containing five galacturonic acid units
pentagalloyl noun: Five galloyl groups in a compound
pentagalloylglucose noun: The ester of glucose with five molecules of gallic acid
pentagamist noun: Someone who has five spouses at the same time.
pentagamy noun: The state of having five spouses simultaneously.
pentagastrin noun: A synthetic polypeptide that has effects like gastrin when given parenterally.
pentagenarian noun: A person between 50 and 59 years old.
pentagestrone noun: A steroidal progestin of the 17α-hydroxyprogesterone group that was never marketed.
pentaglot adjective: In five languages.
pentaglucoside noun: A glucoside containing five glucose units
pentaglutamate noun: Any compound (typically an ester) that has five glutamate groups
pentaglycine noun: An oligopeptide (or section of a protein) consisting of five glycine amino acids
pentaglycosylceramide noun: A glycosylceramide in which the sugar is a pentasaccharide
pentagon noun /ˈpɛn.təˌɡɑn/: A polygon with five sides and five angles.
pentagonal adjective, noun /pɛnˈtæɡənəl/: Of, relating to, or shaped like a pentagon.
pentagonal hexecontahedron noun: A Catalan solid with 60 irregular pentagonal faces, 150 edges and 92 vertices, being the dual of the snub dodecahedron.
pentagonal icositetrahedron noun: A Catalan solid with 24 irregular pentagonal faces, 60 edges and 38 vertices, being the dual of the snub cube.
pentagonal prism noun: A prism with a pentagonal base.
pentagonally adverb: In the form of a pentagon; with five angles.
Pentagonese noun: The jargon used by the United States Department of Defense.
pentagonism noun: In leftist political thought, a stage beyond imperialism embodied by the United States.
pentagonist adjective: Related to pentagonism.
pentagonite noun: A silicate of calcium and vanadium found in basalts and tuffs
pentagonohedron noun: Any polyhedron that has pentagonal faces.
pentagonoid adjective: Approximately pentagonal
pentagram noun /ˈpɛn.təˌɡɹæm/: The shape of a five-pointed star constructed of five intersecting lines meeting at the vertices, such that a central pentagon and five surrounding isosceles...
pentagrammatic adjective: Pentagrammic.
pentagrammic adjective: Being or pertaining to a pentagram.
pentagraph noun: A device used in surveying composed of four flat, straight brass rules, two of which are long and are connected by a double pivot at the end to create a V...
pentagraphene noun: Alternative form of penta-graphene.
pentagrid noun: A tiling of the hyperbolic plane with regular pentagons
pentagrid converter noun: A compound thermionic valve used in superheterodyne radio receivers.
pentaguanine noun: Five consecutive guanine residues in a protein or peptide
pentagynous adjective: Having five styles or pistils.
pentahalide noun: Any halide containing five halogen atoms
pentahedral adjective: relating to a pentahedron
pentahedrally adverb: In pentahedral form.
pentahedron noun /ˌpɛntaˈhiːdɹən/: A polyhedron with five faces.
pentahelicene noun: The helicene having five benzene rings fused into a flat spiral
pentahex noun: A polyhex composed of five hexagons
pentahistidine noun: Five consecutive histidine amino-acids in a peptide or protein; the equivalent repeats in a nucleic acid or gene
pentahydrate noun: A hydrate whose solid contains five molecules of water of crystallization per molecule, or per unit cell.
pentahydrated adjective: Combined with five molecules of water
pentahydric adjective: Having five hydroxy groups.
pentahydride noun: Any hydride containing five atoms of hydrogen per molecule
pentahydrite noun: An evaporite, consisting of magnesium sulphate pentahydrate, with the chemical formula MgSO₄·5H₂O.
pentahydroborite noun: A basic calcium borate found in skarn minerals
pentahydrocalcite noun: A pentahydrated form of calcite
pentahydroxide noun: Any hydroxide having five hydroxyl groups.
pentahydroxy noun: Five hydroxy groups in a molecule.
pentahydroxyflavone noun: Any flavone with five hydroxyl groups.
pentail noun: A species of treeshrew (Ptilocercus lowii) of Borneo, with a very long, quill-shaped tail, which is scaly at the base and plumose at the tip.
pentaiodide noun: Any iodide having five iodine atoms
pentairon noun: Five iron atoms or ions in a compound (Fe₅).
pentakaidecahedral adjective: In the form of a pentakaidecahedron.
pentakaidecahedron noun: Synonym of pentadecahedron.
pentaketide noun: Any polyketide composed of five ketide monomers
pentakis adjective, prefix: Having five identical units
pentakis dodecahedron noun: A Catalan solid equivalent to a dodecahedron with a pentagonal pyramid covering each face, in the end having 60 isosceles triangle faces, 90 edges, and 32...
pentakisphosphate noun: A compound having five simple phosphate groups
pentakosiomedimni noun: Alternative form of pentacosiomedimni.
pental noun: sodium thiopental, a common anesthetic
pentalamellar adjective: Having five layers
pentalamide noun: An antifungal drug.
pentalaminar adjective: Having five layers
pentalateral noun: A decagon whose opposite sides are parallel.
pentalayer adjective: Having five layers
pentalead noun: Five atoms of lead in a chemical compound.
pentalemma noun: An argument analogous to a dilemma, but involving five alternatives.
pentalene noun: The antiaromatic bicyclic hydrocarbon consisting of two fused cyclopentadiene rings
pentalenene noun: A triquinane sesquiterpene related to pentalenic acid
pentalenolactone noun: A sesquiterpene lactone, isolated from some Streptomyces species, that shows antibiotic activity
pentalingual adjective, noun: Written in or otherwise expressed through five languages.
pentallelic adjective: Composed of five alleles
pentalobate adjective: Having five lobes.
pentalobe noun: A tamperproof screw whose drive has five rounded edges.
pentalobed adjective: Having five lobes
pentalobular adjective: Having five lobules.
pentalogue noun: A series of five statements.
pentalogy noun: A set of five works of art that are connected, and that can be seen either as a single work or as five individual works.
pentalogy of Cantrell noun: A rare congenital syndrome that causes defects involving the diaphragm, abdominal wall, pericardium, heart, and lower sternum.
pentalogy of Fallot noun: A congenital heart defect in which a tetralogy of Fallot presents with an additional patent foramen ovale or atrial septal defect.
pentalongin noun: A pyranonaphthoquinone antibiotic isolated from the East African medicinal plant Pentas longiflora
pentaloop noun: A loop of five nucleotides in a nucleic acid
pentalophodont adjective: Having five ridges
pentalophodonty noun: The condition of being pentalophodont
pentalpha noun: A pentagram.
pentaluminium noun: pentaaluminium.
pentaluminum noun: pentaaluminium.
pentalysine noun: An oligopeptide composed of five lysine amino acids
pentamagnesium noun: Five magnesium atoms in a molecule.
pentamanganese noun: Five atoms of manganese in a chemical compound.
pentamannose noun: A pentasaccharide composed of five mannose units
pentamannosyl noun: Five mannosyl groups in a compound
pentamer noun: An oligomer having five subunits.
pentameral adjective: fivefold (of a symmetry group)
pentamerally adverb: In a pentameral manner.
pentamercury noun: Five mercury atoms or ions in a compound (Hg₅).
pentameric adjective: Of or pertaining to a pentamer
pentamerid noun: Any brachiopod of the genus Pentamerus.
pentameride noun: Any extinct brachiopod of the order †Pentamerida
pentamerism noun: five-part radial symmetry
pentamerization noun: The formation of a pentamer.
pentamerize verb: To polymerize to form a pentamer
pentamerized adjective, verb: Converted into a pentamer
pentameroid noun: Any brachiopod of the family Pentamerida, known only as fossils
pentamerous adjective: In five parts; made up of five parts.
pentamerously adverb: In a pentamerous manner.
pentamery noun: the condition of being pentameric
pentameter noun /pɛnˈtæmɪtə(ɹ)/: A line in a poem having five metrical feet.
pentamethyl noun: five methyl groups in a molecule
pentamethylbenzene noun: An aromatic hydrocarbon, C₆H(CH₃)₅, obtained by methylation of xylene.
pentamethylcyclopentadiene noun: The derivative of cyclopentadiene 1,2,3,4,5-pentamethylcyclopentadiene that is used in organic synthesis
pentamethylcyclopentadienyl noun: The cation derived from pentamethylcyclopentadiene
pentamethylcyclopentasiloxane noun /ˌpɛntəˌmɛθəlˌsaɪkləʊˌsaɪləˈsɒkseɪn/: A cyclic organosilicon compound consisting of a five-membered ring of alternating silicon and oxygen atoms, with five methyl groups attached to the silicon...
pentamethylene noun: Five methylene groups in a molecule
pentamethylenediamine noun: Cadaverine.
pentamethylenetetrazol noun /ˌpɛntəˌmɛθɪliːnˈtɛtɹəzɒl/: Pentylenetetrazol.
pentametre noun: Alternative form of pentameter.
pentametric adjective: Relating to or exhibiting pentameter.
pentametrically adverb: In pentameter.
pentametrist noun: One who writes in pentameter.
pentamidine noun /pɛnˈtæm.ɪ.diːn/: A synthetic antibiotic drug used chiefly in the form of its salt C₂₃H₃₆N₄O₁₀S₂ especially to treat protozoal infections (such as leishmaniasis) and to...
pentamillionaire noun: A person whose wealth amounts to five million dollars (or other currency unit).
pentamine noun: The quaternary ammonium compound [(methylimino)diethylene]bis[ethyldimethylammonium] bromide that blocks the activity of ganglions
pentamirror noun: A system of three (not five) mirrors used as a cheaper substitute to a pentaprism in the viewfinders of some single-lens reflex cameras
pentamolybdate noun: The polymeric anion composed of Mo₅O₁₆²⁻ clusters; any salt containing this anion
pentamoraic adjective: Having five morae.
pentamorph noun: A polymorph that has five forms
pentamorphic adjective: having five distinct forms
pentamorphone noun: 14β-pentylaminomorphinone, a semisynthetic opiate derivative and analgesic.
pentamutation noun: A group of five mutations
pentanal noun: An alkyl aldehyde with molecular formula C₅H₁₀O, used in flavourings, resin chemistry, and rubber accelerators.
pentanaldehyde noun: pentanal
pentanary adjective: Composed of five components or elements. Used to refer to alloys, semiconductors, or solid chemical compounds.
pentander noun: Any plant of the former class Pentandria, having five stamens.
pentandrian adjective: Of or relating to the class Pentandria; having five stamens.
pentandrous adjective: Of or relating to the Linnean class Pentandria; having five stamens.
pentane noun /ˈpɛnteɪn/: An aliphatic hydrocarbon of chemical formula C₅H₁₂; either of the three isomers n-pentane, methylbutane (isopentane), and dimethylpropane (neopentane);...
pentanediol noun: Any of several isomeric diols derived from pentane
pentanedione noun: Either of two isomeric aliphatic diketones (2,3-pentanedione, 2,4-pentanedione) derived from pentane
pentanedithiol noun: Any of many isomeric dithiols derived from pentane, but especially 1,5-pentanedithiol that has several industrial applications
pentaneural noun: A mixture of the drugs meprobamate and pentaerithrityl tetranitrate used to manage anxiety disorders
pentangle noun: A pentagram.
pentangular adjective: Having five corners or angles.
pentangularity noun: The quality of being pentangular (having 5 angles, corners, or sides).
pentangularly adverb: In a pentangular manner.
pentanidium noun: Any of a class of catalytic bicyclic heterocyclic cations
pentanitride noun: Any nitride containing five nitrogen atoms
pentanoate noun: Any salt or ester of pentanoic acid.
pentanoic adjective: Of or pertaining to pentanoic acid or its derivatives
pentanoic acid noun: valeric acid
pentanol noun: Any of several isomers of the alcohol C₅H₁₁OH; the principal constituents of fusel oil.
pentanone noun: Any of three organic compounds containing five carbons and a ketone functional group.
pentanoxymethyl noun: An alkoxymethyl radical in which R is a pentyl group
pentanoyl noun: A univalent radical derived from pentanoic acid
pentanuclear adjective: Having five nuclei
pentanucleotide noun: A codon containing five nucleotides.
pentanucleotidic adjective: Relating to or composed of pentanucleotides.
pentaose noun: Alternative form of pentose.
pentaoxide noun: Alternative form of pentoxide.
pentaoxo noun: A chemical compound with five oxygen atoms with double bonds.
pentaoxolane noun: The unstable allotrope of oxygen (O₅) composed of a ring of five atoms
pentapalladium noun: Five palladium atoms or ions in a compound (Pd₅).
pentapedal adjective: Using five legs (in reality, four legs and a tail) in order to walk
pentapeptidase noun: Any enzyme that catalyses the hydrolysis of a pentapeptide
pentapeptide noun: An oligopeptide formed from five amino acids.
pentapeptidic adjective: Relating to or composed of pentapeptides.
pentapetalous adjective: Having five petals.
pentaphene noun: A polycyclic aromatic hydrocarbon with five fused benzene rings.
pentaphenyl noun: Five phenyl radicals in a molecule
pentaphilia noun: love of the number 5
pentaphonic adjective: Composed of five notes
pentaphosphaferrocene noun: Any of a series of compounds, analogous to ferrocenes, in which a ring of five phosphorus atoms is bound to an iron atom
pentaphosphate noun: A compound having five phosphate groups

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0): each word's first meaning. A word with a page of its own links to it; for the rest, this line is PlainSpell's entry. Total under P: 63,631 words, in 213 parts.