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The brightest star in the constellation Piscis Austrinus, 24 light years from Earth.

[Arabic fam al-ḥūt, mouth of the fish, Fomalhaut : fam, mouth; see p in Semitic roots + al-, the + ḥūt, fish.]
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 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 and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
South of Aquarius, and well west of Beta Ceti, is Fomalhaut, the lone 1st-magnitude star of the traditional autumn constellations.
Lonely Fomalhaut is at its not-very-high culmination (the highest it ever appears) due south on our sky map.
On November 13, Chiang and his colleagues announced they had imaged a planet around Fomalhaut, a bright, nearby star surrounded by a ring of dust.
Using the James Clerk Maxwell submillimeter radio telescope on Mauna Kea, researchers have found that two of the brightest stars in the sky, Fomalhaut and Vega, possess disks that may have begun to spawn planets.
The process reproduces patterns for a range of disk types; however, it can't totally explain gaps in disks with very high or low concentrations of gas, such as the controversial TW Hydrae and Fomalhaut systems.
Far lower right of Jupiter twinkles bright, lonely Fomalhaut. More directly below Jupiter is Beta Ceti, or Diphda.
Estimated to be no more than three times Jupiter's mass, the planet, called Fomalhaut b, orbits the bright southern star Fomalhaut, located 25 light-years away in the constellation Piscis Austrinus.
Now, astronomers have used a French radio telescope to map the dust encircling nearby Fomalhaut, the second star proved conclusively to have such a disk.
When, on a November evening, does low Fomalhaut or the beautiful spiral galaxy NGC 253 appear over or between the trees to your south?
About two-thirds of the way between Markab and 1st-magnitude Fomalhaut, low in the south, is 3.3-magnitude Delta ([delta]) Aquarii.
These observations reveal the debris ring around the star Fomalhaut in exceptional detail.
At the bottom of the pile is Piscis Austrinus, the Southern Fish, which lays claim to Fomalhaut, the region's only 1st-magnitude star.