pə̇ˈrazəˌlēn, pīˈr-, -_lə̇n noun
( -s )
Etymology: International Scientific Vocabulary pyrazole + -ine
1. : a dihydro derivative C 3 H 6 N 2 of pyrazole ; especially : a liquid compound obtained usually by the action of hydrazine on acrolein
2. : a derivative of pyrazoline