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Definition of polyester - 3 dictionary results
Polyester
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pol⋅y⋅es⋅ter

  [pol-ee-es-ter, pol-ee-es-ter]
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–noun
1. Chemistry. a polymer in which the monomer units are linked together by the group –COO–, usually formed by polymerizing a polyhydric alcohol with a polybasic acid: used chiefly in the manufacture of resins, plastics, and textile fibers.
2. Also called poly. a fabric made from such textile fibers.
Origin:
1925–30; poly- + ester

Related forms:
pol⋅y⋅es⋅ter⋅i⋅fi⋅ca⋅tion  [pol-ee-es-ter-uh-fi-key-shuhn] , noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Polyester
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Polyester
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pol·y·es·ter   (pŏl'ē-ěs'tər, pŏl'ē-ěs'tər)   
n.  

  1. Any of numerous synthetic polymers produced chiefly by reaction of dibasic acids with dihydric alcohols and used primarily as light, strong, weather-resistant resins in boat hulls, textile fibers, adhesives, and molded parts.

  2. A wrinkle-resistant fabric of fibers made from any of these resins.

pol'y·es'ter adj., pol'y·es'ter·i·fi·ca'tion (-ə-fĭ-kā'shən) n.
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

polyester 
1929, formed from poly(mer) + ester, Ger. contraction of essigäther, from essig "vinegar" + äther "ether." Polyester fiber was discovered 1941.
Online Etymology Dictionary, © 2001 Douglas Harper
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