Noun
A colorless volatile alkaline liquid, N.(CH3)3, obtained from herring brine, beet roots, etc., with a characteristic herringlike odor. It is regarded as a substituted ammonia containing three methyl groups.
Source: Webster's dictionaryIn sterically hindered amines, as in the case of trimethylamine, the protonated form is not well-solvated. Source: Internet
Like other acid herbicides, current formulations use either an amine salt (often trimethylamine ) or one of many esters of the parent compound. Source: Internet