/ Dictionary / Index A asthma: Meaning and Definition of Find definitions for: asth•ma Pronunciation: (az'mu, as'-), [key] — n. a paroxysmal, often allergic disorder of respiration, characterized by bronchospasm, wheezing, and difficulty in expiration, often accompanied by coughing and a feeling of constriction in the chest. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: asthma (Thesaurus) asthenosphere asthmatic Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language