n.
Pronunciation: ' tr ī - ə - ˌ z ē n, tr ī - ' a- ˌ z ē n
Function: noun
Etymology: International Scientific Vocabulary
Date: 1894
: any of three compounds C 3 H 3 N 3 containing a ring composed of three carbon and three nitrogen atoms also : any of various derivatives of these including several (as atrazine and simazine) used as herbicides