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pyrazole

 - 3 dictionary results

pyr⋅a⋅zole

  [pir-uh-zohl, -zawl]
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–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, C3H4N2.
Origin:
1885–90; pyr- + azole
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Medical Dictionary

Main Entry: pyr·azole
Pronunciation: 'pir-&-"zOl
Function: noun
1 : a crystalline heterocyclic weakly basic compoundC3H4N2 isomeric with imidazole
2 : any of various derivatives of pyrazole
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Encyclopedia

pyrazole

any of a class of organic compounds of the heterocyclic series characterized by a ring structure composed of three carbon atoms and two nitrogen atoms in adjacent positions. The simplest member of the pyrazole family is pyrazole itself, a compound with molecular formula C3H4N2.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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