The definition of a microbe is a tiny life form, especially a bacteria or other microorganism that causes disease.(noun)
A tiny bacteria organism that causes you to develop a cold-like illness is an example of a bacteria.
See microbe in Webster's New World College Dictionary
Origin: Fr < Gr mikro- (see micro-) + bios, life (see bio-)
See microbe in American Heritage Dictionary 4
Origin: : Greek mīkro-, micro-
Origin: + Greek bios, life; see gwei- in Indo-European roots.
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