microgram

1
[ mahy-kruh-gram ]
/ ˈmaɪ krəˌgræm /

noun

a unit of mass or weight equal to one millionth of a gram, used chiefly in microchemistry. Symbol: μg

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Also especially British, mi·cro·gramme .

Origin of microgram

1
First recorded in 1885–90; micro- + -gram2

Definition for microgram (2 of 2)

microgram2
[ mahy-kruh-gram ]
/ ˈmaɪ krəˌgræm /

noun

Origin of microgram

2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for microgram

  • It was balanced to a microgram—to a millionth of the combined weight of three aspirin tablets.

    Space Platform|Murray Leinster

Medical definitions for microgram

microgram
[ mīkrə-grăm′ ]

n.

A unit of weight equal to one-millionth (10-6) of a gram.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.