Source: The Collaborative International Dictionary of English v.0.48
Microbiology \Mi`cro*bi*ol"o*gy\, n. [See Microbe; -logy.]
The branch of biology studying minute organisms, or microbes,
such as the bacteria, fungi, viruses, and protozoa. --
Mi`cro*bi`o*log"ic*al, a. -- Mi`cro*bi*ol"o*gist, n.
[Webster 1913 Suppl. +PJC] Microcephalic