Any of a class of subatomic particles (previously hypothetical, since detected, subject to confirmation) consisting of a group of five quarks (compared to three quarks in normal baryons and two in mesons), or more specifically four quarks and one antiquark (symbol Θ).

pentaquinenoun

Alternative form of pentaquin.

pentaradialadj

Radiating outward in five directions.

pentaradiallyadv

In a pentaradial manner

pentaradiateadj

Having five rays.

pentarchadj

Having five points of origin.

pentarchicadj

Relating to a pentarchy or a pentarch

pentarchynoun

Government by five persons.

pentarepeatnoun

A pattern of five repeats (in a nucleic acid or protein (especially a prion))

pentaresistancenoun

The condition of being pentaresistant

pentaresistantadj

resistant to five different drugs (typically to antibiotics)

pentaribonucleotidenoun

An oligoribonucleotide containing five nucleotide units

pentarsicadj

Having five stresses on each line of verse

pentasnoun

Any of the flowering plants of the genus Pentas, especially the Egyptian starcluster, Pentas lanceolata.

pentasaccharidenoun

Any oligosaccharide having five sugar residues

pentaselenidenoun

Five selenide ions in a compound (Se₅).

pentasepalousadj

Having five sepals.

pentasialicadj

Composed of five sialic acid moieties

pentasilnoun

Any of a family of silicate structures composed of regular three-dimensional pentagonal arrangements of atoms

pentasilabenzenenoun

A heteroaromatic compound in which five carbon atoms of a benzene ring have been replaced by silicon atoms.

pentasilicatenoun

Five silicate ions or groups in a compound.

pentasiloxanenoun

Any siloxane having five -Si-O- groups

pentasilvernoun

Five silver atoms or ions in a compound (Ag₅).

pentasodiumnoun

Five sodium atoms or ions in a compound

pentasomicadj

Having five copies of a particular chromosome.

pentasphericaladj

Relating to the pentasphere

pentastarchnoun

A hydroxyethyl starch with five hydroxyethyl groups out of each 11 hydroxyls.

Spelling & Dictionary Insight

The English alphabetical index for the letter P contains 46,516 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 931 pages, and you are currently viewing page 212. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.

On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.

For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "P" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.