a first-magnitude star in the constellation Aquila.
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How to use Altair in a sentence
Above him was the enormous triangle formed by Deneb, Vega, and Altair.Warning from the Stars | Ron Cocking
When he arrived, the Altair officers were already there, a score of correct young men in white dress uniforms.Industrial Revolution | Poul William Anderson
Altair came to me and kept me stirred up till nearly two o'clock.
In his musing upon Altair he began to remember some very curious details.
Nothing explains Altair—nor that moaning wind—nor the writing on the slates.
British Dictionary definitions for Altair
the brightest star in the constellation Aquila. Visual magnitude: 0.77; spectral type: A7V; distance: 16.8 light years
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
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.