nano·​gram | \ ˈna-nə-ˌgram How to pronounce nanogram (audio) \

Definition of nanogram

: one billionth of a gram

Examples of nanogram in a Sentence

Recent Examples on the Web Scientists have determined those consequences can play out even when there are extremely low concentrations of pharmaceuticals in bodies of water, like those detected in the Gwynns Falls — as little as a nanogram per liter. Christine Condon,, 9 Sep. 2021 The deal also increases the level of THC that qualifies as a positive test, from 35 nanograms of carboxy THC per milliliter of urine to 150, and reduces penalties — including the elimination of suspensions — for players who test positive. Tom Schad, USA TODAY, 15 Mar. 2020 In most cases, prostate cancer is slow-growing, and a PSA level of less than 4 nanograms per milliliter of blood is considered within the range of normal. New York Times, 24 Feb. 2020 The Impossible Whopper, Stangle concludes, has 44 milligrams of estrogen compared to just 2.5 nanograms in the beef Whopper. Tim Carman, Washington Post, 26 Dec. 2019 The indictment filed Wednesday states Keese was driving under a suspension and had 50 nanograms or more of cocaine metabolite per milliliter of his whole blood, blood serum or plasma. Madeline Mitchell,, 26 Feb. 2020 Young people's blood was tested for levels of serum cotinine, a metabolite of nicotine; 0.05 to 10 nanograms per milliliter identified exposure to secondhand smoke. Allen Kim, CNN, 15 Aug. 2019 Fifty nanograms of cocaine per milliliter of blood is the threshold that constitutes an OVI for Ohio drivers, according to Ohio law. Madeline Mitchell,, 26 Feb. 2020 If there’s more than half a nanogram of a chemical per milliliter of blood plasma, the FDA says that chemical must be tested for possible health effects. oregonlive, 21 Jan. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nanogram.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of nanogram

1951, in the meaning defined above

History and Etymology for nanogram

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Time Traveler for nanogram

Time Traveler

The first known use of nanogram was in 1951

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Cite this Entry

“Nanogram.” Dictionary, Merriam-Webster, Accessed 24 Jan. 2022.

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More Definitions for nanogram


variants: or chiefly British nanogramme \ ˈnan-​ə-​ˌgram How to pronounce nanogram (audio) \

Medical Definition of nanogram

: one billionth of a gram abbreviation ng


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