picogram

picogram definition - medical

pi·co·gram (pēˈkə-grămˌ, pīˈ-)

noun Abbr. pg
One-trillionth (10-12) of a gram.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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