Meaning & use
nanogram
Last updated
a unit of mass equal to one billionth (10⁻⁹) of a gram, used to measure extremely small quantities.
See it in a sentence
The blood test detected hormone levels as low as a few nanograms per liter.
Trace amounts of the pollutant were measured in nanograms, showing how sensitive the equipment was.
A note on using this word
A nanogram is one-billionth of a gram — far too small to see, so the term is used mainly in scientific and medical measurements.
Make it your own
Write a sentence using “nanogram”, then compare your use with the examples above.
Your draft stays on this page and is not sent anywhere.