n. A heterocyclic organic compound containing two nitrogen atoms next to each others in a five-membered ring, called 1,2-diazole in IUPAC nomenclature.
n. A group of compounds containing that structure.
The Century Dictionary and Cyclopedia
n. A crystalline base, , made by heating pyrazole di- or tricarbonic acid. It melts at 70° C.
Word Usage
"Geller, and J. E. Wallace, Interaction effects of ethanol and pyrazole in laboratory rodents, British Journal of Pharmacology 43 1971: 67-73."