micron

or mi·kron

[ mahy-kron ]
/ ˈmaɪ krɒn /

noun, plural mi·crons, mi·cra [mahy-kruh]. /ˈmaɪ krə/.

Also called micrometer. the millionth part of a meter. Symbol: μ, mu
Physical Chemistry. a colloidal particle whose diameter is between 0.2 and 10 microns.
Physics. a very small unit of pressure, equal to that exerted by a column of mercury 1μ high.

QUIZZES

IS YOUR VOCABULARY AS STRONG AS A HIGH SCHOOL STUDENT? TRY THIS QUIZ TO SEE!

It may seem like fun and games but this quiz that uses vocab from popular stories will determine how much you know.
Question 1 of 10
disgruntle
to deprive of ability, qualification, or strength
to put into a state of sulky dissatisfaction
to make repayment or return for (service, benefits, etc.)
TAKE THE QUIZ TO FIND OUT

Origin of micron

1880–85; <Greek mīkrón a little, noun use of neuter singular of mīkrós small; see -on1

Words nearby micron

micromotion, micromount, micromyelia, micromyeloblast, micromyeloblastic leukemia, micron, micronation, Micronesia, Micronesian, micronize, micronodular
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for micron

British Dictionary definitions for micron

micron
/ (ˈmaɪkrɒn) /

noun plural -crons or -cra (-krə)

a unit of length equal to 10 –6 metre. It is being replaced by the micrometre, the equivalent SI unit

Word Origin for micron

C19: New Latin, from Greek mikros small
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for micron

micron

n. pl. mi•crons

micrometer2
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for micron

micron
[ mī′krŏn′ ]

See micrometer2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.