[al-gol, -gawl]
a star of the second magnitude in the constellation Perseus: the first known and most famous eclipsing binary star.
Also called Demon Star.

1350–1400; Middle English < Arabic, equivalent to al the + ghūl ghoul; as translation of Greek (Ptolemy) gorgónion the head of the Gorgon Medusa, held by Perseus Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
Algol1 (ˈælɡɒl)
the second brightest star in Perseus, the first known eclipsing binary. Visual magnitude: 2.2--3.5; period: 68.8 hours; spectral type (brighter component): B8V
[C14: from Arabic al ghūl the ghoul]

Algol2 (ˈælɡɒl)
a computer programming language designed for mathematical and scientific purposes; a high-level language
[C20 alg(orithmic) o(riented) l(anguage)]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

Beta Persei, variable star in the constellation Perseus, late 14c., lit. "the Demon," from Arabic al-ghul "the demon." It corresponds, in modern representations, to the gorgon's head Perseus is holding, but it probably was so called because it visibly varies in brightness every three days, which sets
it apart from other bright stars. The computer language (1959) is a contraction of algo(rithmic) l(anguage); see algorithm.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
Algorithmic-Oriented Language
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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