pen•tyl•ene•tet•ra•zol(pen′tl ēn te′trə zôl′, -zol′),USA pronunciationn.[Pharm.]
Drugsa white, crystalline, bitter-tasting, water-soluble powder, C6H10N4, used as a respiratory and circulatory stimulant, esp. in the treatment of barbiturate poisoning, and to induce a convulsive state in the treatment of certain mental diseases.