/ Dictionary / Index E ethacrynic acid: Meaning and Definition of Find definitions for: eth'a•cryn'ic ac'id Pronunciation: (eth'u-krin'ik, eth"-), [key] — Pharm. Pharm. a whitish crystalline powder, CHClO, that is a potent diuretic used in the treatment of acute pulmonary edema and other edemas associated with such diseases as congestive heart failure, cirrhosis of the liver, and renal disease. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. eth ethal Related Content Daily Word Quiz: crockery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language