mil·li·gram | \-ˌgram \

Definition of milligram 

: a unit of mass equal to ¹/₁₀₀₀ gram — see Metric System Table

Examples of milligram in a Sentence

Recent Examples on the Web

Hayes found that four-foot snakes injected close to 100 milligrams into the mice. Kyle Dickman, Outside Online, "A Rattle with Death in Yosemite," 20 June 2018 Most healthy adults can consume up to 400 milligrams (mg) of caffeine–the amount in approximately four cups of regular coffee–per day. Tori Rodriguez, Woman's Day, "5 "Bad" Habits That Are Actually Good for You," 3 Aug. 2016 Experts say just a few milligrams of the odorless Novichok liquid — the weight of a snowflake — is enough to kill a person within minutes. Matt Dunham And Gregory Katz,, "British police race to find source of new nerve agent poisoning," 6 July 2018 Gillespie says the typical cup of drip coffee has 100 to 200 milligrams of caffeine. Ac Shilton, Outside Online, "Coffees That Deliver on Twice the Caffeine," 25 May 2018 Depending on the brand, these eggs typically contain 100 to 300 milligrams of omega-3s per egg. Darlene Zimmerman, Detroit Free Press, "Eggs: What you need to know about size, color and type," 22 Apr. 2018 In an industry where active ingredients are often bulk-purchased for pennies and sold in milligrams for dollars, the patent is more than just the product. Alexander Zaitchik, The New Republic, "How Big Pharma Was Captured by the One Percent," 28 June 2018 Edible cannabis goods must not have more than 10 milligrams of THC per serving or 100 milligrams per package, according to the regulations, which were regarded largely as a guideline since January, when legal sales of marijuana to adults began. Peter Fimrite,, "Cheap cannabis products available before new California rules kick in," 27 June 2018 Fentanyl is a powerful opioid that is 50 to 100 times more potent than morphine and 30 to 50 times more potent than heroin, and a dose as small as a quarter of a milligram can be fatal. Nicole Chavez, CNN, "Record fetanyl bust in Nebraska finds enough doses to kill about 26 million people," 25 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'milligram.' 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 milligram

1797, in the meaning defined above

History and Etymology for milligram

French milligramme, from milli- + gramme gram

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Statistics for milligram

Last Updated

22 Aug 2018

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Time Traveler for milligram

The first known use of milligram was in 1797

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More Definitions for milligram



English Language Learners Definition of milligram

: a weight equal to 1/1000 gram


mil·li·gram | \ˈmi-lə-ˌgram \

Kids Definition of milligram

: a unit of weight equal to 1/1000 gram


variants: or chiefly British milligramme \-ˌgram \

Medical Definition of milligram 

: one thousandth of a gram abbreviation mg

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