[gloo-koh-suh-meen, -min]
noun Biochemistry.
an aminosugar occurring in many polysaccharides of vertebrate tissue and also as the major component of chitin.

1880–85; glucose + -amine Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
glucosamine (ɡluːˈkəʊzˈəmiːn)
the amino derivative of glucose that occurs in chitin. It has been used in some herbal remedies

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

glucosamine glu·co·sa·mine (glōō-kō'sə-mēn', glōō'kō-sə-mēn')
An amino derivative of glucose that is found especially in polysaccharides such as chitin and in cell membranes.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
glucosamine   (gl-kō'sə-mēn', gl'kō-)  Pronunciation Key 
An amino derivative of glucose in which an amino group replaces a hydroxyl group. It is a component of many polysaccharides and is the basic structural unit of chitin. Glucosamine is used as an over-the-counter dietary supplement by some people with symptoms of arthritis. Chemical formula: C6H13NO5.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Glucosamine sulfate may be more effective than glucosamine hydrochloride.
Take supplements such as glucosamine and chondroitin that support joint and cartilage health.
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