First Known Use: circa 1890
Dictionary
microgram
noun mi·cro·gram \ˈmī-krə-ˌgram\
Definition of MICROGRAM
: one millionth of a gram — see metric system table
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Origin of MICROGRAM
International Scientific Vocabulary
Medical Dictionary
microgram
noun mi·cro·gram \ˈmī-krə-ˌgram\
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