Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. One billionth (10-9) of a gram.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A unit of mass equal to 0.000 000 001 grams. Symbol: ng

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. one billionth (1/1,000,000,000) gram

Etymologies

nano- +‎ gram (Wiktionary)

Examples

  • Petacchi had a TUE that allowed him to have levels of salbutamol of 1000 nanograms (a nanogram is a billionth of a gram) per milliliter of urine.

    The Explainer: Why clenbuterol?

  • They are measured by a unit known as the nanogram, which is one billionth of a gram.

    LSD and the Third Eye

  • Petacchi had a TUE that allowed him to have levels of salbutamol of 1000 nanograms a nanogram is a billionth of a gram per milliliter of urine.

    The Explainer: Why clenbuterol?

  • In cases where DDT has been detected in air, it is associated with air masses coming from regions where DDT is still used or from the evaporated DDT from contaminated water or soil. p, p'-DDT and p, p'-DDE concentrations measured in air in the Great Lakes region in 1990 reached maximum levels of 0.035 and 0.119 nanograms (a nanogram is a billionth of a gram) of chemical per cubic meter of air (ng/m3), respectively.

    Public Health Statement for DDT, DDE, and DDD

  • Between 1978 and 1991, the estimated daily intake of PCBs in adults from dietary sources declined from about 1.9 nanograms (a nanogram is a billionth part of a gram) to less than 0.7 nanograms.

    Public Health Statement for Polychlorinated Biphenyls (PCBs)

  • KOBILINSKY: A nanogram is a billionth of a gram of DNA.

    CNN Transcript Feb 16, 2008

  • Another type as well called a nanogram strength product.

    CNN Transcript Dec 10, 2003

  • The levels are extremely low, less than a nanogram per gram of fish tissue (a nanogram is a billionth of a gram, and a gram is 1 / 28th of an ounce).

    AGORAVOX - The Citizen Media

  • While Colorado Attorney General John Suthers told 9News that "virtually everybody at that five nanogram level would be impaired, unsafe to drive an automobile," national experts vehemently disagree.

    Jessica Corry: Could DUI Pot Bill Lead To Wrongful Convictions?

  • Could you cite evidence for this accusation or is last your nanogram of remaining credibility less important than your need to spout inanities?

    Hillary Campaign: She Will Not Concede Tonight

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