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collagen

[kol-uh-juh n]
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noun Biochemistry.
  1. any of a class of extracellular proteins abundant in higher animals, especially in the skin, bone, cartilage, tendon, and teeth, forming strong insoluble fibers and serving as connective tissue between cells, yielding gelatin when denatured by boiling.
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Origin of collagen

1860–65; < Greek kólla glue + -gen
Related formscol·lag·e·nous [kuh-laj-uh-nuh s] /kəˈlædʒ ə nəs/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for collagen

Historical Examples

  • By boiling with water, dilute acids or dilute alkalies, collagen is split up into gelatin or glutin.

    Principles and Practice of Fur Dressing and Fur Dyeing

    William E. Austin

  • As goatskins are so tight fibred, a longer liming and a greater loss of collagen is permissible than with most pelts for chrome.

    Animal Proteins

    Hugh Garner Bennett


British Dictionary definitions for collagen

collagen

noun
  1. a fibrous scleroprotein of connective tissue and bones that is rich in glycine and proline and yields gelatine on boiling
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Derived Formscollagenic (ˌkɒləˈdʒɛnɪk) or collagenous (kəˈlædʒənəs), adjective

Word Origin

C19: from Greek kolla glue + -gen
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

Word Origin and History for collagen

n.

structural protein of connective tissue, 1843, from French collagène, from Greek kolla "glue" + -gen "giving birth to" (see -gen).

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Online Etymology Dictionary, © 2010 Douglas Harper

collagen in Medicine

collagen

(kŏlə-jən)
n.
  1. The fibrous protein constituent of bone, cartilage, tendon, and other connective tissue that converts into gelatin by boiling.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

collagen in Science

collagen

[kŏlə-jən]
  1. Any of various tough, fibrous proteins found in bone, cartilage, skin, and other connective tissue. Collagens have great tensile strength, and provide these body structures with the ability to withstand forces that stretch them. Collagens consist of three polypeptide chains arranged in a triple helix, and are bundled together in fibers. When boiled in water, collagen is converted into gelatin.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.