Requiring or involving microscopy: microsurgery. (prefix)
One-millionth (10-6): microampere. (prefix)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "micro-" in a sentence
"There has always been varying levels of stress in the world on both the micro- and macro- scales, but I would venture to say that it may be occurring at several notches above the usual what has been historically known."
"The Numbers Guy Blog Radiation Numbers in Damaged Japan Plant Becquerels, grays and sieverts all are internationally accepted units that quantify different aspects of radiation, while micro- and nano- are prefixes denoting one-millionth and one-billionth, respectively."
"However, Member States would be required to take into account micro- and macroeconomic circumstances in their own markets."