/ Dictionary / Index A airsickness: Meaning and Definition of Find definitions for: air•sick•ness Pronunciation: (âr'sik"nis), [key] — n. a feeling of nausea and dizziness, sometimes accompanied by vomiting, as a result of the motion of the aircraft in which one is traveling. Cf. motion sickness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: airsickness (Thesaurus) airsick air sign Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language