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mikra

 - 8 dictionary results

mi⋅kron

[mahy-kron]
–noun, plural -krons, -kra [-kruh] .
micron.

mi⋅cron

[mahy-kron]
–noun, plural -crons, -cra [-kruh] .
1. Also called micrometer. the millionth part of a meter. Symbol: μ, mu
2. Physical Chemistry. a colloidal particle whose diameter is between 0.2 and 10 microns.
3. Physics. a very small unit of pressure, equal to that exerted by a column of mercury 1μ high.
Also, mikron.


Origin:
1880–85; < Gk mīkrón a little, n. use of neut. sing. of mīkrós small; see -on 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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mi·cron also mi·kron   (mī'krŏn')   
n.   pl. mi·crons or mi·cra (-krə) also mi·krons or mi·kra (-krə)
A unit of length equal to one millionth (10-6) of a meter. No longer in technical use.

[From Greek mīkron, neuter of mīkros, small.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

micron 
"one millionth of a meter," 1892, coined 1880 in Fr. from Gk. mikron, neut. of mikros "small."
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: mi·cron
Pronunciation: 'mI-"krän
Function: noun
: MICROMETER
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

micron mi·cron or mi·kron (mī'krŏn')
n. pl. mi·crons or mi·cra (-krə) or mi·krons or mi·kra (-krə)

Abbr. μm See micrometer.

mikron mi·kron (mī'krŏn')
n.
Variant of micron.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
micron   (mī'krŏn')  Pronunciation Key 
See micrometer2.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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