microgram

noun

mi·​cro·​gram ˈmī-krə-ˌgram How to pronounce microgram (audio)
: one millionth of a gram see Metric System Table

Examples of microgram in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
One of the newfound bitter substances activated the taste receptors even at the lowest concentration measured, 63.3 micrograms per liter. K. R. Callaway, Scientific American, 8 Aug. 2025 Concentration levels dropped back below the standard to 0.09 micrograms per cubic meter in April, and even lower to 0.06 micrograms in May. Mars King, Twin Cities, 30 July 2025 And more than 1,600 of them had lead in their blood above 3.5 micrograms per deciliter, which is the new reference level for when cases get flagged. Andrew Brown, Hartford Courant, 28 July 2025 Most supplements provide much more vitamin B12—as much as 1,000 micrograms. Kirstyn Hill, Health, 15 July 2025 See All Example Sentences for microgram

Word History

Etymology

International Scientific Vocabulary

First Known Use

circa 1890, in the meaning defined above

Time Traveler
The first known use of microgram was circa 1890

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Cite this Entry

“Microgram.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microgram. Accessed 20 Aug. 2025.

Medical Definition

microgram

noun
mi·​cro·​gram ˈmī-krə-ˌgram How to pronounce microgram (audio)
1
: one millionth of a gram
2

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