One of the mysteries of the English language finally explained.
Biochemistry. A quaternary ammonium compound which is present in various animal tissues and is also formed during putrefaction by dehydration of choline, and can be isolated as a toxic, odoriferous, syrupy liquid; trimethylvinylammonium hydroxide, CH₂=CHN(CH₃)₃OH. Formerly also: †choline itself (obsolete).
Mid 19th century (in an earlier sense). From neuro- + -ine. In sense 1 after French neurine; compare also German Neurine.
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