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Definition of procyon - 3 dictionary results

Pro⋅cy⋅on

[proh-see-on]
–noun Astronomy.
a first-magnitude star in the constellation Canis Minor.

Origin:
1650–60; < L < Gk Prokýōn name of a star, equiv. to pro- pro- 2 + kýōn dog (see hound ); so called because it rises just before Sirius, the Dog Star
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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Pro·cy·on   (prō'sē-ŏn')   
n.  A binary star in the constellation Canis Minor. Also called Dog Star.

[Latin Procyōn, from Greek Prokuōn : pro-, before; see pro-2 + kuōn, dog; see kwon- in Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

Procyon 
bright winter star in constellation Canis Minoris, 1658, from L. from Gk. prokyon, from pro "before" + kyon "dog" (see canine); so called from its rising just before the "Dog Star," Sirius.
Online Etymology Dictionary, © 2001 Douglas Harper
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