Achernar(redirected from Alpha Eridani)
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A star in the constellation Eridanus that is one of the brightest stars in the sky and is 114 light years from Earth.
[From Arabic 'aḫīr an-nahr, the end of the river (referring to the star's position in the constellation Eridanus) : 'aḫīr, last, end; see ʔḫr in Semitic roots + al-, the + nahr, river; see nhr in Semitic roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Astronomy) the brightest star in the constellation Eridanus, visible only in the S hemisphere. Visual magnitude: 0.5; spectral type: B3V; distance: 144 light years
[from Arabic ākhīr al-nahr, literally: end of the river, alluding to the star's location in the constellation]
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