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 cup of raw beets contains 148 micrograms (mcg) of folate, which is about 37% of the CDC’s recommended daily intake of 400 mcg of folic acid. Desireé Oostland, Vogue, 22 Apr. 2026 Fatalities have been reported after consuming three to 58 micrograms per liter. Alex Gurley, PEOPLE, 21 Apr. 2026 Manganese is typically less than 50 micrograms per liter in water. Noelle Phillips, Denver Post, 17 Apr. 2026 The standard threshold to flag iron deficiency is a ferritin level below 15 micrograms per liter, based on a single study from the 1990s. Allison Palmer, Charlotte Observer, 20 Mar. 2026 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 26 Apr. 2026.

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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