Definition of microgram in English:

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Pronunciation: /ˈmīkrəˌɡram/
(abbreviation mcg)


One millionth of a gram. (Symbol: μg)
Example sentences
  • The concentrations of manganese in two samples of surface soil taken from area A were 748 and 629 micrograms per gram, dry weight.
  • The trouble was that a mere microgram (millionth of a gram) can kill, if lodged in the lungs.
  • The rats received either 60 or 300 micrograms per kilogram of body weight.

For editors and proofreaders

Syllabification: mi·cro·gram

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