mi·cro·gram | \ˈmī-krə-ˌgram \

Definition of microgram 

: one millionth of a gram — see Metric System Table

Examples of microgram in a Sentence

Recent Examples on the Web

All tests came back positive for lead, at 12, 17, and 23 micrograms per deciliter. Deborah Bloom, CNN, "The woman risking her life to save a village from lead poisoning," 20 Apr. 2018 The annual average of PM 2.5 levels for Sacramento County from 2016, the most recent year available, shows 8.8 micrograms per cubic meter, according to kidsdata.org. Hannah Holzer, sacbee, "Air pollution increases risk for type 2 diabetes, study finds," 12 July 2018 In 30 cases, children had blood lead ranging from 15 to 36.3 micrograms when the case was closed. Mary Spicuzza, Milwaukee Journal Sentinel, "Milwaukee failed to protect lead-poisoned children by massive neglect and missteps," 31 May 2018 However, the Mayo Clinic says that teens and adults should probably get anywhere from 30 to 100 micrograms a day. Korin Miller, Allure, "The Truth About Biotin Supplements, According to Nutritionists," 18 May 2018 Just how much acrylamide is in a cup of coffee varies but, on average, a single 160 ml cup of coffee delivers 0.45 μg, or micrograms, of acrylamide, according to a 2013 research paper from the Polish Institute of Public Health. Jenny Splitter, SELF, "How Worried Do You Need to Be About Those Cancer Warnings for Your Coffee?," 13 June 2018 The results from dust on a chair measured 1,700 micrograms of lead per square foot — 42 times higher than the federal hazard level for residential floors. Barbara Laker, Philly.com, "School District cleans Olney Elementary after 10.7 million asbestos fibers found," 8 June 2018 To avoid reaching dangerous levels for adults, the U.S. Food and Drug Administration has set a maximum daily dietary intake of no more than 6 micrograms per day. Cathie Anderson, sacbee, "California accuses 2 manufacturers of selling toddler formulas with dangerous levels of lead," 7 June 2018 The report also found that in mid-2016, the city appeared to de-emphasize treatment of children with lead levels of 15 to 19.9 micrograms, though this is required by state law. Mary Spicuzza, Milwaukee Journal Sentinel, "Milwaukee failed to protect lead-poisoned children by massive neglect and missteps," 31 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'microgram.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of microgram

circa 1890, in the meaning defined above

History and Etymology for microgram

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Statistics for microgram

Last Updated

2 Sep 2018

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The first known use of microgram was circa 1890

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mi·cro·gram | \ˈmī-krə-ˌgram \

Medical Definition of microgram 

1 : one millionth of a gram

More from Merriam-Webster on microgram

Britannica.com: Encyclopedia article about microgram

Comments on microgram

What made you want to look up microgram? Please tell us where you read or heard it (including the quote, if possible).


exaggeratedly or childishly emotional

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