lysozyme

n. enzyme which functions as an antiseptic (Chemistry)

Lysozyme is a 14.4 kilodalton enzyme  that damages bacterial cell walls by catalyzing hydrolysis of 1,4-beta-linkages between N-acetylmuramic acid and N-acetyl-D-glucosamine residues in a peptidoglycan and between N-acetyl-D-glucosamine residues in chitodextrins. It is abundant in a number of secretions, such as tears, saliva, and mucus. Lysozyme is also present in cytoplasmic granules of the polymorphonuclear neutrophils (PMN). Large amounts of lysozyme can be found in egg whites.
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Lysozyme /ly·so·zyme/ an enzyme present in saliva, tears, egg white, and many animal fluids, functioning as an antibacterial agent by catalyzing the [more]Lysozyme - Community and Resources

Noun
1. an enzyme found in saliva and sweat and tears that destroys the cell walls of certain bacteria
(synonym) muramidase
(hypernym) enzyme

n. lysozyme, enzyme which functions as an antiseptic (Chemistry)