Microgram

noun

Definitions

Noun
  1. 1
    An SI unit of mass equal to 10⁻⁶ grams. Symbol: μg A unit of mass equal to one millionth of a gram, or 0.000 001 grams.

    "Holonyms: milligram < gram < kilogram < megagram < gigagram"

  2. 2
    one millionth (1/1,000,000) gram wordnet

Etymology

From micro- + gram.

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