ˌ ̷ ̷(ˌ) ̷ ̷ˈpīˌrēn, -_rə̇n noun
also an·ti·py·rin -_rə̇n
( -s )
Etymology: from German antipyrin, from Antipyrin, a trademark
: a white crystalline compound C 11 H 12 N 2 O derived from pyrazolone and formerly widely used as an antipyretic, analgesic, and antirheumatic but now largely replaced in oral use by less toxic substances (as aspirin)