pref.
- Small: microcircuit.
- Abnormally small: microcephaly.
- Requiring or involving microscopy: microsurgery.
- One-millionth (10 -6): microampere.
[Greek mīkro-, from mīkros, small.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.