Browse by letter

English Words Starting With M

8,594 entries — pick a word to see its definition, pronunciation, and usage.

Filter

Parts of speech

Noun Verb Adjective Adverb Plural noun Combining form Verb (transitive)Verb (intransitive)Verb (ambitransitive)

methyl chloroformate
nounVery Low (C2/Professional)
/ˌmɛθaɪl ˌklɔːrəʊˈfɔːmeɪt/A highly toxic, volatile, and corrosive organic chemical compound (CH₃OCOCl) used as a reagent and chemical intermediate.
methyl ethyl ketone
nounC2
/ˌmɛθaɪl ˌiːθaɪl ˈkiːtəʊn/A colourless, volatile, flammable organic compound (chemical formula C₄H₈O) with a characteristic sweet, pungent odour, used primarily as an industrial solvent.
methyl formate
nounVery Low (C2/Technical Specialist)
/ˌmɛθaɪl ˈfɔːmeɪt/A colourless, volatile liquid with a pleasant odour, used as a solvent and a fumigant. Chemically, it is the methyl ester of formic acid (HCOOCH₃).
methyl group
nounC2
/ˈmɛθ(ɪ)l ɡruːp/An alkyl radical derived from methane, with the chemical formula –CH₃.
methyl isobutyl ketone
nounC2
/ˌmiːθaɪl ˌaɪsəʊˌbjuːtɪl ˈkiːtəʊn/A clear, colorless industrial solvent with a characteristic odor, used in paints, lacquers, and as a chemical intermediate.
methyl isocyanate
nounLow frequency
/ˌmɛθaɪl ˌaɪsəʊˈsaɪəneɪt/A highly toxic, volatile organic compound (CH₃NCO) used primarily as an intermediate in pesticide production.
methyl lactate
nounVery Low
/ˌmɛθɪl ˈlækteɪt/A chemical compound, specifically the methyl ester of lactic acid.
methyl methacrylate
nounRare / Very Low Frequency
/ˌmɛθɪl ˌmɛθəˈkɹɪleɪt/A volatile, flammable, colourless liquid ester used primarily as the monomer in the production of the transparent thermoplastic polymethyl methacrylate (PMMA).
methyl oleate
nounC2 - Very low frequency; highly specialized.
/ˌmɛθaɪl ˈəʊlɪeɪt/A specific chemical compound, the methyl ester of oleic acid.
methyl orange
nounLow (Domain-specific)
/ˌmɛθɪl ˈɒrɪndʒ/A synthetic azo compound commonly used as a pH indicator in chemical analysis, changing from red in acidic solutions to yellow in alkaline solutions.
methyl parathion
nounVery Low
/ˌmɛθɪl ˌpærəˈθʌɪɒn/A highly toxic organophosphate insecticide and acaricide, historically used in agriculture.
methyl propyl ketone
nounVery Low
/ˌmɛθɪl ˌprəʊpɪl ˈkiːtəʊn/A specific organic compound used primarily as a solvent.
methyl red
nounVery low
/ˌmiːθaɪl ˈrɛd/A chemical compound used as a pH indicator in laboratory tests.
methyl salicylate
nounTechnical/Low-frequency
/ˌmiːθaɪl səˈlɪsɪleɪt/A colorless, sweet-smelling ester derived from salicylic acid and methanol; the main component of wintergreen oil, used as a flavoring and topical analgesic.
methyl styryl ketone
nounVery Low
/ˈmɛθ.ɪl ˈstaɪ.rɪl ˈkiː.təʊn/A chemical compound with the formula C6H5CH=CHCOCH3, an unsaturated ketone used in organic synthesis and perfumery.
methyl sulfate
nounC2/Technical
/ˈmɛθaɪl ˈsʌlfeɪt/A chemical compound formed by combining a methyl group (CH₃-) with a sulfate group (SO₄²⁻), often referring to dimethyl sulfate (CH₃)₂SO₄, a toxic alkylating agent.
methyl transferase
nounLow (highly technical)
/ˌmɛθɪl ˈtrænsfəreɪz/An enzyme that catalyzes the transfer of a methyl group from one molecule to another.
methylacetic acid
nounVery Low (technical term)
/ˌmɛθɪləˈsiːtɪk ˈæsɪd/A carboxylic acid with the formula CH₃CH₂COOH, traditionally named for its structure as acetic acid with a methyl group attached; more commonly known as propionic acid.
methylal
nounVery Low
/ˈmɛθɪlæl/A colourless, volatile, flammable liquid with a chloroform-like odour, used as a solvent and in perfumery.
methylamine
nounC2
/ˌmɛθɪləˈmiːn/A flammable, colourless gas with a fishy odour, which is the simplest primary aliphatic amine.

Showing 4321–4340 of 8594 words.