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pyrazoline

[ pi-raz-uh-leen, -lin, pahy- ]

noun

, Chemistry.
  1. any of the group of heterocyclic compounds containing three carbon atoms, two adjacent nitrogen atoms, and one double bond in the ring.
  2. the parent compound, C 3 H 6 N 2 .


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Word History and Origins

Origin of pyrazoline1

First recorded in 1885–90; pyrazole + -ine 2

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