English Words: M
36,575 words · Page 319 of 732
A biguanide derivative, C₄H₁₁N₅, used, now chiefly as the hydrochloride, as an oral hypoglycemic agent in the treatment of type 2 diabetes mellitus; 1,1-dimethylbiguanide.
A choline derivative with parasympathomimetic activity that can induce bronchoconstriction in asthmatics and is used in tests of airway responsiveness; O-acetyl-β-methylcholine, C₈H₁₈NO₂⁺.
Any salt or ester of methacrylic acid, especially an ester used in the manufacture of resins and plastics.
A powerful synthetic analgesic drug which is similar to morphine in its effects but less sedative and is used as a substitute drug in the treatment of morphine and heroin addiction.
A white waxy substance, found in small quantities in spermaceti as an ethereal salt of several fatty acids, and regarded as an alcohol of the methane series.
4-methallyloxy-3,5-dimethoxyphenethylamine, a psychedelic drug and the 4-methyl analog of allylescaline.
A type of binary rocket fuel composed of liquid oxygen (lox) oxidizer and liquid methane combustible.
A highly addictive phenethylamine stimulant drug. Its systematic (IUPAC) name is (S)-N-methyl-1-phenylpropan-2-amine.
The simplest aliphatic hydrocarbon, CH₄, being a constituent of natural gas, and one of the most abundant greenhouse gases.
The sulfonamide of methanesulfonic acid, CH₃SO₂NH₂, used as an intermediate in the synthesis of pharmaceuticals etc
A colourless gas, a thiol with a smell like rotten cabbage, found naturally in plants and animals.
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 319. 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.