[ al-tair, -tahyuh r, al-tair, -tahyuh r ]
/ ˈæl tɛər, -taɪər, ælˈtɛər, -ˈtaɪər /


a first-magnitude star in the constellation Aquila.

Origin of Altair

< Arabic (al-nasr) al-ṭā'ir (the) flying (eagle) Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for altair

British Dictionary definitions for altair

/ (ˈæltɛə) /


the brightest star in the constellation Aquila. Visual magnitude: 0.77; spectral type: A7V; distance: 16.8 light years

Word Origin for Altair

Arabic, from al the + tā'ir bird
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for altair

[ ăl-târ, -tīr ]

A bright white star in the constellation Aquila. Altair is a main-sequence star in the Hertzprung-Russell diagram. It is the 12th brightest star in the night sky, with an apparent magnitude of 0.77. Altair, along with Vega and Deneb, form the Summer Triangle asterism. Scientific name: Alpha Aquilae.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.