/ Dictionary / Index V vesicant: Meaning and Definition of Find definitions for: ves•i•cant Pronunciation: (ves'i-kunt), [key] — adj. producing a blister or blisters, as a medicinal substance; vesicating. —n. a vesicant agent or substance. (in chemical warfare) a chemical agent that causes burns and destruction of tissue both internally and externally. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: vesicant (Thesaurus) vesical vesica piscis Related Content Daily Word Quiz: hinder Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language