Definition of collidine
plural -s
: any of a number of organic bases C8H11N that are the trimethyl, methyl-ethyl, and propyl homologues of pyridine, that are in general pungent oily poisonous liquids, and are obtained chiefly as by-products in the coking process or are synthesized: such as
a
: the liquid symmetrical trimethyl homolog made by reaction of acetone and ammonia and used as a solvent in chromatography — called also
s-collidine, 2,4,6-collidine, 2,4,6-trimethylpyridine
