/ Dictionary / Index A Altair: Meaning and Definition of Find definitions for: Al•tair Pronunciation: (al'târ, -tīr, al-târ', -tīr'), [key] — n. a first-magnitude star in the constellation Aquila. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: altair (Thesaurus) Altai Mountains Altamira Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language