noun Biotechnology.
any polymeric chemical manufactured by a living organism, as proteins and polysaccharides.
such a chemical prepared by laboratory synthesis.

1960–65; bio- + polymer Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

biopolymer bi·o·pol·y·mer (bī'ō-pŏl'ə-mər)
A macromolecule, such as a protein or nucleic acid, that is formed in a living organism.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
It had nothing to do with the talk on biopolymer physics he was invited to give.
During processing, the biopolymer also can be functionalized to improve its adsorption of heavy metals.
All feathers are composed of the natural biopolymer fiber keratin.
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