/ Dictionary / Index B blister gas: Meaning and Definition of Find definitions for: blis'ter gas" Pronunciation: [key] — Chemical Warfare. Chemical Warfare. a poison gas that burns or blisters the tissues of the body; vesicant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. blister copper blistering Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language