micron Hear it!

micron definition

mi·cron (mī′krän′)

noun pl. microns -·crons′ or micra -·cra (-krə)

a unit of linear measure equal to one millionth of a meter, or one thousandth of a millimeter; micrometer: symbol, μm

Etymology: ModL < Gr mikron, neut. of mikros, small, minute: see mica

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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