- any of the group of heterocyclic compounds containing three carbon atoms, two adjacent nitrogen atoms, and two double bonds in the ring.
- the parent compound, C3H4N2.
Origin of pyrazole
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a crystalline soluble basic heterocyclic compound; 1,2-diazole. Formula: C 3 H 4 N 2
C19: from German, from pyrrole + inserted -az- (see azo-)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012