lysozyme

lysozyme

[lahy-suh-zahym]
noun Biochemistry.
an enzyme that is destructive of bacteria and functions as an antiseptic, found in tears, leukocytes, mucus, egg albumin, and certain plants.

Origin:
1920–25; lyso- + (en)zyme

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World English Dictionary
lysozyme (ˈlaɪsəˌzaɪm)
 
n
an enzyme occurring in tears, certain body tissues, and egg white: destroys bacteria by hydrolysing polysaccharides in their cell walls
 
[C20: from lyso- + (en)zyme]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

lysozyme
1922, from lyso-, comb. form of Gk. lysis "a loosening" (see lyse) + suffix from enzyme.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

lysozyme ly·so·zyme (lī'sə-zīm')
n.
An enzyme occurring naturally in egg white, human tears, saliva, and other body fluids, capable of destroying the cell walls of certain bacteria and thereby acting as a mild antiseptic. Also called muramidase.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica
Encyclopedia

lysozyme

enzyme found in the secretions (tears) of the lacrimal glands of animals and in nasal mucus, gastric secretions, and egg white. Discovered in 1921 by Sir Alexander Fleming, lysozyme catalyzes the breakdown of certain carbohydrates found in the cell walls of certain bacteria (e.g., cocci). It thus functions, in the case of lacrimal fluid, to protect the cornea of the eye from infection.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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