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pyrazole

[ pir-uh-zohl, -zawl ]

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 .


pyrazole

/ ˈpaɪrəˌzəʊl /

noun

  1. a crystalline soluble basic heterocyclic compound; 1,2-diazole. Formula: C 3 H 4 N 2
“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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Word History and Origins

Origin of pyrazole1

First recorded in 1885–90; pyr- + azole
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Word History and Origins

Origin of pyrazole1

C19: from German, from pyrrole + inserted -az- (see azo- )

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pyrazinepyrazoline