Dictionary

picogram

noun pi·co·gram \ˈpē-kō-ˌgram, -kə-\

Definition of PICOGRAM

:  one trillionth of a gram
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Origin of PICOGRAM

International Scientific Vocabulary
First Known Use: 1951
Medical Dictionary

picogram

noun pi·co·gram \ˈpē-kō-ˌgram, -kə-\

Medical Definition of PICOGRAM

:  one trillionth of a gram—abbreviation pg

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