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pyrazole

[pir-uh-zohl, -zawl] /ˈpɪr əˌzoʊl, -ˌzɔl/
noun, Chemistry.
1.
any of the group of heterocyclic compounds containing three carbon atoms, two adjacent nitrogen atoms, and two double bonds in the ring.
2.
the parent compound, C 3 H 4 N 2 .
Origin of pyrazole
1885-1890
First recorded in 1885-90; pyr- + azole
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for pyrazole

pyrazole

/ˈpaɪrəˌzəʊl/
noun
1.
a crystalline soluble basic heterocyclic compound; 1,2-diazole. Formula: C3H4N2
Word Origin
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
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