What do a.m. and p.m. stand for?


[mil-i-gram] /ˈmɪl ɪˌgræm/
a unit of mass or weight equal to one thousandth of a gram, and equivalent to 0.0154 grain.
Abbreviation: mg.
Origin of milligram
1800-10; < French milligramme. See milli-, -gram2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for milligram
  • When the resulting animals themselves laid eggs, they contained milligram amounts of the desired antibodies.
  • Some sensitive individuals can tolerate tapering by only a fraction of a milligram per month.
  • Even a milligram taken every day for a year is likely to cause harm.
British Dictionary definitions for milligram


one thousandth of a gram mg
Word Origin
C19: from French
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
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Word Origin and History for milligram

also milligramme, 1802, from French milligramme; see milli- + gram.

Online Etymology Dictionary, © 2010 Douglas Harper
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milligram in Medicine

milligram mil·li·gram (mĭl'ĭ-grām')
Abbr. mg
A metric unit of mass equal to one thousandth (10-3) of a gram.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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milligram in Science
A unit of mass or weight in the metric system equal to 0.001 gram. See Table at measurement.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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