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claudius ptolemaeus

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Ptol⋅e⋅my

[tol-uh-mee]
–noun, plural -mies for 2.
1. (Claudius Ptolemaeus) fl. a.d. 127–151, Hellenistic mathematician, astronomer, and geographer in Alexandria.
2. any of the kings of the Macedonian dynasty that ruled Egypt 323–30 b.c.
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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Cultural Dictionary

Ptolemy [(tol-uh-mee)]

An ancient Greek astronomer, living in Egypt, who proposed a way of calculating the movements of the planets on the assumption that they, along with the sun and the stars, revolved around the Earth. (See Ptolemaic universe.)

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Science Dictionary
Ptolemy   (tŏl'ə-mē)  Pronunciation Key 
Greek astronomer and mathematician who based his astronomy on the belief that all heavenly bodies revolved around Earth. Ptolemy's model of the solar system endured until the 16th century when Nicolaus Copernicus proposed that the heavenly bodies in the solar system orbited the Sun.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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