/ Dictionary / Index D dysbarism: Meaning and Definition of Find definitions for: dys•bar•ism Pronunciation: (dis'bä-riz"um), [key] — n. Med. the condition resulting from a difference between the atmospheric pressure and the pressure of gases within the body. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dysautonomia dyscalculia Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language