[foh-muhl-hawt, -muh-loh]
noun Astronomy.
a star of the first magnitude and the brightest star in the constellation Piscis Austrinus.

1585–95; < Spanish Arabic fam al-ḥawt mouth of the fish; so called from its position in the constellation Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
Fomalhaut (ˈfəʊməˌləʊt)
the brightest star in the constellation Piscis Austrinus, possessing a protoplanetary disc. Distance: 25 light years. Spectral type A3V
[C16: from Arabic fum'l-hūt mouth of the fish, referring to its position in the constellation]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

bright star in the constellation Piscis Austrinis, 1594, from Arabic Fum al Hut "the Fish's Mouth."
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica


the 17th star (excluding the Sun) in order of apparent brightness. It is used in navigation because of its conspicuous place in a sky region otherwise lacking in bright stars. It lies in the southern constellation Piscis Austrinus, about 25 light-years from the Earth. A white star, it has an apparent magnitude of 1.18. A sixth-magnitude companion star is yellow.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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