Pronunciation: (mī'krō), [key]
—adj., n., pl. -cros.
1. extremely small.
2. minute in scope or capability.
3. of or pertaining to microcomputers.
4. of or pertaining to microeconomics.
1. anything extremely small in scope or capability.
2. a microcomputer.
a combining form with the meanings “small” (microcosm; microgamete), “very small in comparison with others of its kind” (microcassette; microlith), “too small to be seen by the unaided eye” (microfossil; microorganism), “dealing with extremely minute organisms, organic structures, or quantities of a substance” (microdissection; microscope), “localized, restricted in scope or area” (microburst; microhabitat), “(of a discipline) focusing on a restricted area” (microeconomics), “containing or dealing with texts that require enlargement to be read” (microfilm; microreader), “one millionth” (microgram). Also, esp. before a vowel,micr-.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.