Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun One trillionth (10−12) of a gram.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A unit of mass equal to 0.000 000 000 001 grams. Symbol: pg

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

pico- + gram

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Examples

  • Remember that Contador tested positive for 50 picograms (a picogram is a trillionth of a gram) of clenbuterol per milliliter of urine.

    The Explainer: Why clenbuterol? 2010

  • Remember that Contador tested positive for 50 picograms a picogram is a trillionth of a gram of clenbuterol per milliliter of urine.

    The Explainer: Why clenbuterol? 2011

  • Thundat and his colleagues demonstrate that they could detect very small amounts of adsorbed explosives -- with a limit of 600 picograms (a picogram is a trillionth of a gram).

    unknown title 2009

  • Thundat and his colleagues demonstrate that they could detect very small amounts of adsorbed explosives -- with a limit of 600 picograms (a picogram is a trillionth of a gram).

    unknown title 2009

  • Thundat and his colleagues demonstrate that they could detect very small amounts of adsorbed explosives -- with a limit of 600 picograms (a picogram is a trillionth of a gram).

    unknown title 2009

  • Thundat and his colleagues demonstrate that they could detect very small amounts of adsorbed explosives -- with a limit of 600 picograms (a picogram is a trillionth of a gram).

    innovations-report 2009

  • EPA scientists already concluded in a preliminary report that people shouldn't consume more than 0.7 picogram of dioxin per kilogram of body weight a day.

    EPA Misses Deadline on Dioxin Guidelines Bill Tomson 2012

  • I consider it no small irony that the first syllable of the word dioxins sounds like die: So potent is this group of more than 100 cancer-causing industrial chemicals that the Environmental Protection Agency is currently considering setting the "safe" daily level for human exposure at seven-tenths of a picogram per kilogram of body weight.

    Jennifer Grayson: Eco Etiquette: Help! Am I Doomed By Dioxins? 2010

  • I consider it no small irony that the first syllable of the word dioxins sounds like die: So potent is this group of more than 100 cancer-causing industrial chemicals that the Environmental Protection Agency is currently considering setting the "safe" daily level for human exposure at seven-tenths of a picogram per kilogram of body weight.

    Jennifer Grayson: Eco Etiquette: Help! Am I Doomed By Dioxins? 2010

  • Asked what a picogram was, Shiya Ribowsky said, “Think of it like this: if the universe is so large as to be beyond imagining, then the picogram might be smaller than we can conceive of.”

    The Lampshade Mark Jacobson 2010

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