- Pathology. the theory that infectious diseases are due to the agency of germs or microorganisms.
- Biology. biogenesis.
Origin of germ theory
First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for germ theory
The Aryan germ-theory has, however, the merit of explaining resemblances between many myths of different Aryan nations.The Classic Myths in English Literature and in Art (2nd ed.) (1911)
Charles Mills Gayley
- the theory that all infectious diseases are caused by microorganisms
- the theory that living organisms develop from other living organisms by the growth and differentiation of germ cells
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
- 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.