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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.
That shakes out to about 104 to 175 micrograms per teaspoon, the max amount of salt recommended by day. Audrey Bruno, SELF, 25 Nov. 2025 One cup of baked sweet potato has about 1,920 micrograms (mcg) of vitamin A and 950 milligrams (mg) of potassium. Patty Weasler, Verywell Health, 24 Nov. 2025 It's typically measured in international units (IU) or micrograms (mcg), and dosages aren't broken down by vitamin D type. Lindsey Desoto, Health, 24 Nov. 2025 That small feat—producing just tens of micrograms—was heralded as a technology transfer milestone. Srishti Gupta, Interesting Engineering, 19 Nov. 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 3 Dec. 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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