English Words: M

36,575 words · Page 324 of 732

methylhydrazinenoun

A hydrazine with an additional methyl group.

methylicadj

Pertaining to, derived from, or containing methyl.

methylidenoun

An anion or radical derived from methane by the removal of three hydrogen atoms.

methylidenenoun

The CH₂= group in which the free valences are part of a double bond.

methylidenylnoun

Any substituted derivative of a methylidene radical

methylidynenoun

carbyne

methylimidazolenoun

Any of a class of compounds derived from imidazole through replacement of a hydrogen by a methyl group.

methylimidazoliumnoun

Any methyl derivative of the imidazolium cation.

methylindolenoun

Any of a group of related compounds, including skatole.

methylindolizidinenoun

Any methyl derivative of indolizidine

methylisoborneolnoun

Any methylated derivative of isoborneol, but especially (1R,3R,4R)-3,4,7,7-tetramethylbicyclo[2.2.1]heptan-3-ol

methylisocyanatenoun

A toxic organic compound with molecular formula CH₃NCO, an intermediate in the production of carbamate pesticides.

methylisocyanidenoun

An organic compound of the isocyanide family, mainly used for making five-membered heterocyclic rings.

methylisoxazolenoun

Any of three isomeric methyl derivative of isoxazole, many derivatives of which are used as pharmaceuticals

methylitaconatenoun

Any salt or ester of methylitaconic acid.

methylketobemidonenoun

A particular narcotic painkiller.

methylketolnoun

2-methylindole, a mildly toxic and slightly flammable organic compound which occurs as a white solid and turns brown over time.

methyllanthioninenoun

A particular thioether amino acid.

methyllithiumnoun

The binary organometallic compound CH₃Li that is used in organic synthesis

methyllorazepamnoun

The drug lormetazepam.

methyllycaconitinenoun

A particular toxic diterpenoid alkaloid found in many species of Delphinium (larkspurs).

methyllycoctoninenoun

A diterpene alkaloid found in the Delphinium genus.

methyllysinenoun

Any of three methylation products of the amino acid lysine that play a role in epigenetics.

methylmagnesiumnoun

The univalent organometallic radical CH₃Mg- that is a part of several Grignard reagents

methylmalonatenoun

Any salt or ester of methylmalonic acid.

methylmalonicadj

Relating to methylmalonic acid or its derivatives

methylmalonic acidnoun

A dicarboxylic acid, a C-methylated derivative of malonic acid, HOOCCH(CH3)COOH , that is involved in the Krebs cycle

methylmannosidenoun

Any methyl glycoside / ether of mannose

methylmercurialadj

Of or pertaining to methylmercury; containing methylmercury.

methylmercuricadj

That contains a methyl group and a mercury atom.

methylmercurynoun

The organometallic cation CH₃Hg⁺; it is a toxicant that accumulates in the environment in the form of various compounds

methylmethaqualonenoun

A synthetic analogue of methaqualone with similar sedative and hypnotic properties.

methylmorphinenoun

A methylated form of morphine.

methylnaltrexonenoun

A peripherally-acting μ-opioid antagonist that acts to reverse some of the side effects of opioid drugs such as constipation without affecting analgesia or precipitating withdrawals.

methylnaphthalenenoun

An aromatic hydrocarbon.

methylnorhomosekikaic acidnoun

(normally 4'-O-methylnorhomosekikaic acid) A depside carboxylic acid with IUPAC name 3-((2,4-dihydroxy-6-propylbenzoyl)oxy)-2-hydroxy-4-methoxy-6-pentylbenzoic acid

methylolnoun

Synonym of methanol.

methylomenoun

The set of nucleic acid methylation modifications in an organism's genome or in a particular cell.

methylomicsnoun

The study of methylomes

methylosomenoun

A cluster of proteins responsible for methylation

methylotrophnoun

Any organism that uses simple methyl compounds (such as methane or methanol) as a source of carbon and of energy

methylotrophicadj

Pertaining to organisms that use, as substrates for growth, C1 compounds (e.g. methanol, methylamine, methane).

methylotrophicallyadv

In a methylotrophic manner.

methylparabennoun

A preservative and antifungal agent, the methyl ester of p-hydroxybenzoic acid.

methylpentanenoun

Any methyl derivative of a pentane, but especially 2-methylpentane

methylphenethylaminenoun

Any of several isomeric C- or N- methyl derivatives of phenethylamine

methylphenidatenoun

A stimulant used to treat attention deficit hyperactivity disorder and narcolepsy, better known by the trade name Ritalin

methylphenobarbitalnoun

A barbiturate drug used as a sedative, anxiolytic, and anticonvulsant.

methylphosphonofluoridatenoun

Any of a class of highly toxic organophosphorus compounds characterized by the methylphosphonofluoridate chemical structure, including sarin and soman. They are potent cholinesterase inhibitors, often used as chemical weapons.

methylpolysiloxanenoun

polydimethylsiloxane

Spelling & Dictionary Insight

The English alphabetical index for the letter M contains 36,575 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 732 pages, and you are currently viewing page 324. 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 "M" 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.