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[pol-ee-am-ahyd, -id] /ˌpɒl iˈæm aɪd, -ɪd/
noun, Chemistry
a polymer in which the monomer units are linked together by the amide group –CONH–.
Origin of polyamide
1925-30; poly- + amide Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for polyamide
  • Desalination is done today with polyamide membranes that get clogged with oil and organisms in seawater.
  • They have an outer poly-urethane liner and an inner polyamide body.
British Dictionary definitions for polyamide


/ˌpɒlɪˈæmaɪd; -mɪd/
any one of a class of synthetic polymeric materials containing recurring -CONH- groups See also nylon
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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polyamide in Science
A polymer produced by the reaction of the amino group (NH2) from one molecule with the carboxylic acid group (CO2H) from another molecule. The resulting structure is similar to that of a protein. Silk is a naturally occurring polyamide, and nylon is a synthetic polyamide.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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