|pipər+ noun
( -s )
Etymology: piper idene + oxan, a gas, CNO, from ox- (I) + -ane
: an adrenolytic drug C 14 H 19 NO 2 containing both a piperidine and a benzodioxan nucleus used in the form of its crystalline hydrochloride to detect the presence of epinephrine-producing tumors by the transient fall in blood pressure it produces