nanogram

American  

[nan-uh-gram, ney-nuh-] / ˈnæn əˌgræm, ˈneɪ nə- /

noun

1. one billionth of a gram. ng

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nanogram British  

/ ˈnænəʊˌɡræm /

noun

1.  ng.  one billionth (10 ^–9 ) of a gram

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Etymology

Origin of nanogram

First recorded in 1950–55; nano- + -gram ²

Example Sentences

When it comes to the latter, exposure to 1 nanogram per cubic meter for 30 years is associated with a cancer risk of 360 cases in 1 million people, according to a state report.

From Los Angeles Times

For the experiment, researchers exposed silverside embryos to the different pesticides for 96 hours, at a concentration of 1 nanogram of pesticide per liter of water.

From Science Daily

In a cubic meter of air, there may be only a nanogram of mercury, making it virtually impossible to detect via satellite.

From Science Daily

Currently drinking water in the UK is categorised as medium-risk if there are between 10 and 100 nanograms of specific types of PFAS.

From BBC

And two of 102 surface samples exceeded the Washington state Department of Health decontamination guideline of 15 nanograms per square centimeter.

From Seattle Times