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trimethylamine
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trimethylamine n. 
/trʌɪˌmiːθʌɪlˈeɪmiːn/, /(ˌ)trʌɪˈmɛθᵻləmiːn/, /traɪˌmɛθələˈmin/ N(CH3)3.
Brit. /ˌtrʌɪmᵻˈθʌɪləmiːn/
, /ˌtrʌɪmᵻˈθʌɪləmiːn//trʌɪˌmiːθʌɪlˈeɪmiːn//(ˌ)trʌɪˈmɛθᵻləmiːn/U.S. /ˌtraɪˈmɛθələˌmin/
, /ˌtraɪˈmɛθələˌmin//traɪˌmɛθələˈmin/triˈmethylamine
triˈmethylamine n. the tertiary amine of methyl, N(CH3)3, in which all the 3 hydrogen atoms of ammonia, NH3, are replaced by 3 methyl groups; a volatile liquid with a penetrating fishy odour; formerly also called trimethyl ammonia and trimethylia.
ΚΠ
1857 W. A. Miller Elements Chem. III. 210 Trimethylia... This alkali..is found in considerable quantity in the roe of herrings.
1866 W. Odling Lect. Animal Chem. 87 Trimethylamine (CH3)3N, a frequent constituent of stale brine in which herrings and other fish have been pickled.
1874 A. B. Garrod & E. B. Baxter Essentials Materia Medica (ed. 4) 408 The Hydrochlorate of Trimethylamine is a stable compound, in long needle-shaped crystals, very deliquescent, soluble in water and in alcohol.
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