a unit of mass or weight equal to one thousandth of a gram, and equivalent to 0.0154 grain. Abbreviation: mg
Also, especially British, milligramme.

1800–10; < French milligramme. See milli-, -gram2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To milligram
World English Dictionary
milligram or milligramme (ˈmɪlɪˌɡræm)
mg one thousandth of a gram
[C19: from French]
milligramme or milligramme
[C19: from French]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

1810, from Fr. milligramme; see milli- + gram.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

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.
Cite This Source
American Heritage
Science Dictionary
milligram   (mĭl'ĭ-grām')  Pronunciation Key 
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.
Cite This Source
Example sentences
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.
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature