c582–c500 b.c, Greek philosopher, mathematician, and religious reformer. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
Pythagoras1 (paɪˈθæɡərəs)
?580--?500 bc, Greek philosopher and mathematician. He founded a religious brotherhood, which followed a life of strict asceticism and greatly influenced the development of mathematics and its application to music and astronomy

Pythagoras2 (paɪˈθæɡərəs)
a deep crater in the NE quadrant of the moon, 136 kilometres in diameter

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
Pythagoras   (pĭ-thāg'ər-əs)  Pronunciation Key 
Greek philosopher and mathematician who theorized that numbers constitute the essence of all natural things. He developed the pythagorean theorem and was one of the first to apply mathematical order to observations of the stars.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

Pythagoras definition

(Pythagoras of Samos, Ionia; about 569-475 BC) The Greek mathematician who founded a philosophical and religious school in Croton (now Crotone) in southern Italy.
Pythagoras is most famous for Pythagoras's Theorem but other important postulates are attributed to him, e.g. the sum of the angles of a triangle is equal to two right angles.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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