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
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GreenGuard Gold: An even more rigorous standard signifying that a product emits less than 220 micrograms per cubic meter in VOCs. Nashia Baker, Architectural Digest, 30 May 2025 Adults need at least 15 micrograms (600 IU) of vitamin D per day.1 Vitamin K: Vitamin K helps deposit calcium in the bones and prevents it from accumulating where it is not supposed to, such as the blood vessels, which can lead to the hardening of the walls of the arteries and veins. Trang Tran, Verywell Health, 27 May 2025 The highest and safest tolerable dose for vitamin D3 in all adults is 4,000 IU (100 micrograms). Health, 20 May 2025 Each year, about 1,000 children in Milwaukee test positive for lead poisoning, which the CDC defines as at or above 3.5 micrograms per deciliter of lead in the blood. Brenda Goodman, CNN Money, 9 May 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 5 Jun. 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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