germ-theory

germ theory

noun
1.
Pathology. the theory that infectious diseases are due to the agency of germs or microorganisms.
2.
Biology, biogenesis.

Origin:
1870–75

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Collins
World English Dictionary
germ theory
 
n
1.  the theory that all infectious diseases are caused by microorganisms
2.  the theory that living organisms develop from other living organisms by the growth and differentiation of germ cells

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

germ theory n.
The doctrine holding that infectious diseases are caused by the activity of microorganisms within the body.

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