[pi-raz-uh-lohn, pahy-] /pɪˈræz əˌloʊn, paɪ-/

noun, Chemistry.
any of the group of heterocyclic compounds containing the pyrazoline ring in which one carbon atom is doubly linked to an oxygen atom not in the ring.
the parent compound, C 3 H 4 N 2 O.

pyrazolone py·raz·o·lone (pĭ-rāz’ə-lōn’)
A class of nonsteroidal anti-inflammatory agents, such as phenylbutazone, used in the treatment of arthritis.


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