from The American Heritage® Dictionary of the English Language, 4th Edition
- Small: microcircuit.
- Abnormally small: microcephaly.
- Requiring or involving microscopy: microsurgery.
- One-millionth (10-6): microampere.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- Very small.
- One millionth.
from the GNU version of the Collaborative International Dictionary of English
- Small, little, trivial, slight.
- A millionth part of.
from The Century Dictionary and Cyclopedia
- n. In entomology, any small insect.
- n. An element of Greek origin, meaning ‘small, little’; specifically, in physics, a prefix indicating a unit one millionth part of the unit it is prefixed to: as, Microfarad, microhm, etc.; in lithology, indicating that the structure designated is microscopic in character, or that it is so minutely developed as not to be recognized without the help of the microscope, e. g. microgranitic, micropegmatitic, microgranulitic. See these words.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. extremely small in scale or scope or capability
Greek mīkro-, from mīkros, small.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek μικρός (mikros, "small"). (Wiktionary)