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
Also especially British, mi·cro·gramme.

Origin of microgram

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

Definition for microgram (2 of 2)

microgram

2
[ mahy-kruh-gram ]
/ ˈmaɪ krəˌgræm /

noun

Origin of microgram

2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples 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

Medicine 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.