/pen'tl een te"treuh zawl', -zol'/ , n. Pharm.
a white, crystalline, bitter-tasting, water-soluble powder, C 6 H 10 N 4 , 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.
[ PENT- + (METH)YLENE + TETR(A)- + AZ- + -OL 2 ]