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.
The Agency ​ has just reduced the primary (health-based) annual PM2.5 standard from 12 to 9.0 micrograms per cubic meter. Francesca Dominici, Forbes, 20 Jan. 2025 The average American gets a little over 100 micrograms a day. Stephanie Brown, Verywell Health, 9 Jan. 2025 For comparison, the average PM 2.5 exposure for a census tract near the 2018 Camp Fire in California was 1.2 micrograms per cubic meter between 2006 and 2020, spiking to an exposure of 310 micrograms per cubic meter during the actual fire. Kylie Mohr, WIRED, 4 Jan. 2025 The agency currently considers an average of just 3.4 micrograms per liter of the pesticide atrazine to be an acceptable level. Rachel Frazin, The Hill, 6 Dec. 2024 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

Dictionary Entries Near microgram

Cite this Entry

“Microgram.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microgram. Accessed 6 Feb. 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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