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definitions

microgram

1
[mahy-kruh-gram]
|

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

microgram

2
[mahy-kruh-gram]

noun

micrograph(def 2).

Origin of microgram

2
micro- + -gram1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for microgram

Historical Examples of microgram

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

    Space Platform

    Murray Leinster

microgram in Medicine

microgram

[mī′krə-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.