English Words: M
36,575 words · Page 323 of 732
A white powdery substance, obtained by the methylation of cellulose, that swells in contact with water to form a gel; it has many industrial applications.
The chloroalkane 1,1,1-trichloroethane, once produced industrially as a solvent, banned due to ozone layer effects.
common chemical found in a number of cleaning detergents, especially hair shampoo
Any of three isomeric cyclic diolefins, (methyl derivatives of cyclopentadiene), the organic precursor to the methylcyclopentadienyl-ligand commonly found in organometallic chemistry.
Any methyl derivative of cytosine, but especially 5-methylcytosine formed by methylation of DNA
The compound 3-(3,4-dihydroxyphenyl)-2-methyl-L-alanine, C₁₀H₁₃NO₄, which is used as an antihypertensive agent.
A chemical intermediate derived from ecgonine or cocaine; a pyrolysis product formed when crack cocaine is smoked.
An organic compound with the formula (CH₂)₂CCH₂, used as a reagent in organic synthesis.
A functional group with the structural formula R-O-CH₂-O-R', connected to the rest of a molecule by two chemical bonds.
A more obscure psychedelic drug that is a cyclopropylmethyl derivative of MDMA.
The psychoactive drug MDMA or Ecstasy, an amphetamine that produces entactogenic, psychedelic, and stimulant effects.
A methylenedioxy derivative of phenethylamine, many of whose derivatives are psychoactive
Any of a class of compounds in which a methylenedioxy group is connected to a phenyl, widely found in natural products, including safrole, and in drugs and chemicals.
The substrate used by the enzyme methylenetetrahydrofolate reductase to generate 5-methyltetrahydrofolate (levomefolic acid).
A methyl derivative of erythritol, especially 2-C-methyl-D-erythritol, whose phosphate is involved in the biosynthesis of isoprenoids
A semisynthetic steroidal estrogen used with normethandrone (methylestrenolone) for the treatment of menopausal symptoms.
A hydrolase enzyme that catalyzes the reaction of methylguanidine and water into methylamine and urea.
A methyl derivative of guanosine that is added to the "front" end of a eukaryotic messenger RNA shortly after the start of transcription.
Any methyl derivative of histidine, but especially 3-methylhistidine which is found in contractile muscle
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 323. 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.