/ Dictionary / Index P pentylenetetrazol: Meaning and Definition of Find definitions for: pen•tyl•ene•tet•ra•zol Pronunciation: (pen"tl-ēn-te'tru-zôl", -zol"), [key] — n. Pharm. a white, crystalline, bitter-tasting, water-soluble powder, CHN, 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. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pentylenetetrazol (Thesaurus) pentyl pentyl group Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language