English Words: P

46,516 words · Page 299 of 931

phenylalaninenoun

An essential amino acid C₉H₁₁NO₂ found in most animal proteins; it is essential for growth; the inability to metabolize it leads to phenylketonuria; it is a constituent of aspartame.

phenylalanylnoun

The univalent radical derived from phenylalanine

phenylalkanenoun

Any phenyl derivative of an alkane

phenylanilinenoun

The aromatic secondary amine (C₆H₅)₂NH; it has many industrial applications

phenylatedadj

Modified by the addition of phenyl groups.

phenylbenzenenoun

biphenyl

phenylboricadj

Synonym of phenylboronic.

phenylboronicadj

Relating to phenylboronic acid or its derivatives

phenylboronic acidnoun

The simplest aryl boronic acid, C₆H₅B(OH)₂.

phenylbutanoicadj

Of or pertaining to phenylbutanoic acid or its derivatives

phenylbutanoic acidnoun

Any of several phenyl derivatives of butanoic acid, but especially 4-phenylbutanoic acid, many of whose derivatives have biochemical activity

phenylbutyratenoun

Any phenyl derivative of a butyrate

phenylcarbinolnoun

benzyl alcohol

phenylcoumarinnoun

Any phenyl derivative of a coumarin

phenyldiazirinenoun

A chemical formed by linking a phenyl group to a diazirine ring.

phenylenedicarbenenoun

Any dicarbene based on a phenylene moiety.

phenylenevinylenenoun

The divalent radical derived from phenylene and vinylene (used especially as a polymer)

phenylephedrinenoun

Phenylephrine.

phenylephrinenoun

An α-adrenergic receptor agonist related to adrenaline, used as a vasoconstrictor and nasal decongestant; 3-(1-hydroxy-2-methylamino-ethyl)phenol, with the formula C₉H₁₃NO₂.

phenylethylamidenoun

N-phenylethyl-azanide

phenylethylaminenoun

Alternative form of phenethylamine.

phenylethylmalonamidenoun

A metabolite of primidone.

phenylheptatrienenoun

Any phenyl derivative of a heptatriene

phenylheptatriynenoun

Any phenyl derivative of a heptatriyne

phenylhydrazinenoun

The phenyl derivative of hydrazine C₆H₅-NH-NH₂; it is used in the synthesis of indoles, and in the analysis of sugars etc.

phenylhydraziniumnoun

The univalent cation formed by protonation of phenylhydrazine

phenylhydrazonenoun

The hydrazone derivative of benzaldehyde; it is used in the analysis of sugars.

phenylhydroxylaminenoun

The organic compound with the chemical formula C₆H₅NHOH.

phenylicadj

Pertaining to, derived from, or containing phenyl.

phenylindolenoun

An indole into which a phenyl group has been substituted

phenylisopropyladenosinenoun

A purine nucleoside.

phenylisothiocyanatenoun

A reagent used in reversed-phase HPLC.

phenylketonenoun

Any phenyl ketone C₆H₅CO-R

phenylketonurianoun

A metabolic disorder in which individuals lack the liver enzyme phenylalanine hydroxylase (PAH) which is needed to metabolize the amino acid phenylalanine.

phenyllactatenoun

Any salt or ester of phenyllactic acid.

phenyllithiumnoun

An organometallic agent with the empirical formula C₆H₅Li.

phenylmercurialadj

Of or relating to phenylmercury.

phenylmercuricadj

Of or relating to phenylmercury.

phenylmercurynoun

Any of a group of chemical compounds used as fungicides.

phenylmethanenoun

Synonym of toluene.

phenylmethanesulfonylfluoridenoun

A serine protease inhibitor commonly used in the preparation of cell lysates.

phenylmethylnoun

Benzyl: the cyclic radical, ion or functional group having the formula C₆H₅CH₂

phenylmethylsulfonylfluoridenoun

A serine protease inhibitor commonly used in the preparation of cell lysates.

phenylmethylsulphonylnoun

Alternative form of phenylmethylsulfonyl.

phenylnitronenoun

Any phenyl derivative of a nitrone.

phenylosazonenoun

Any osazone derived from phenylhydrazine and a sugar

phenylpiperazinenoun

A chemical compound featuring a phenyl group bound to a piperazine ring, many of whose derivatives are used as pharmaceuticals.

phenylpiperidinenoun

A chemical compound with a phenyl moiety directly attached to piperidine.

phenylpiracetamnoun

A derivative of the nootropic drug piracetam, claimed to increase physical stamina and provide improved tolerance to cold.

phenylpropanenoun

A propylbenzene.

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 299. 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.