mesophil

[ mĕzə-fĭl′ ]

n.

A microorganism with an optimum growth temperature that is between 20°C and 45°C.
Related formsmes′o•philic (-fĭlĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.