milligram

noun

mil·​li·​gram ˈmi-lə-ˌgram How to pronounce milligram (audio)
: a unit of mass equal to 1/1000 gram see Metric System Table

Examples of milligram 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.
However, there are some premium brands that carry coffee ice cream that contains more than 80 milligrams of caffeine — nearly the equivalent to a shot of espresso. Caroline C. Boyle, USA Today, 22 Mar. 2026 Fentanyl, a synthetic drug, is so deadly that just 2 milligrams, equal to about 10 to 15 grains of table salt, is enough to kill somebody, according to the Texas Department of Health and Human Services. Claire Osborn, Austin American Statesman, 20 Mar. 2026 Adults were randomly assigned to receive 4 milligrams (mg), 9 mg, or 12 mg of retatrutide, or a placebo, in the form of a once-weekly injection. Emily Kay Votruba, EverydayHealth.com, 20 Mar. 2026 The man who brought his records to her office had test results showing 400 milligrams. Charles Schmidt, Scientific American, 17 Mar. 2026 See All Example Sentences for milligram

Word History

Etymology

French milligramme, from milli- + gramme gram

First Known Use

1797, in the meaning defined above

Time Traveler
The first known use of milligram was in 1797

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Cite this Entry

“Milligram.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/milligram. Accessed 26 Mar. 2026.

Kids Definition

milligram

noun
mil·​li·​gram ˈmil-ə-ˌgram How to pronounce milligram (audio)
: a weight equal to ¹⁄₁₀₀₀ gram see metric system

Medical Definition

milligram

noun
mil·​li·​gram
variants or chiefly British milligramme
: one thousandth of a gram
abbreviation mg

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