Definition from Wiktionary, the free dictionary
- (organic chemistry) A pyrrolidine alkaloid found mainly in coca leaves, extracted as a thick, pungent, pale-yellow oil of a burning taste.
- Henry Watts, A Dictionary of Chemistry and the Allied Branches of Other Sciences III (hæmaphein–mysorin; 1871), pages 222–223, “hygrine”
- NED V (H–K; 1st ed., 1901), § 1 (H), page 493/2, “Hygrine”
- OED (2nd ed., 1989), “hygrine”