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

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Women and men 51 and over should get at least 15 micrograms, or 600 International Units (IU) of vitamin D per day, with a Tolerable Upper Intake Limit (UL) of 100 micrograms (4,000 IU). Laura Schober, Health, 6 Mar. 2025 How to Meet Your Daily Requirements The adequate intake (AI) of vitamin K for adults is 90 micrograms for women and 120 micrograms for men. Elizabeth Barnes, Verywell Health, 4 Mar. 2025 The concentration of an air pollutant is measured in micrograms per cubic meter of air, or µg/m3. Scott Lafee, San Diego Union-Tribune, 18 Feb. 2025 Taking into consideration all food and drink sources that contain selenium, plus any supplements, adults should not take more than 400 micrograms daily. Daryl Austin, USA TODAY, 4 Feb. 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 12 Mar. 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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