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.
Yet at the doses in the products sold are often hundreds of milligrams taken several times a day. — Jesse M. Pines, Forbes.com, 6 Aug. 2026 The new medication, Tylenol with Naproxen, combines 325 milligrams of acetaminophen (Tylenol) and 110 mg of naproxen sodium to provide up to 12 hours of pain relief. — Fran Kritz, Verywell Health, 6 Aug. 2026 Over six weeks, the group received three doses of oral psilocybin—first one milligram and then two 25-mg doses, each two weeks apart—alongside intensive talk therapy before and after dosing. — Alexandra Pattillo, Scientific American, 5 Aug. 2026 Depending on which plant serves you, Philly tap water carries 4 to 44 milligrams of sodium per 8-ounce glass. — Christine Kirchhoff, The Conversation, 30 July 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

Rhymes for milligram

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Browse Nearby Words

milligauss
milligram
millihenry
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Cite this Entry

“Milligram.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/milligram. Accessed 15 Aug. 2026.

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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
-ˌgram How to pronounce milligram (audio)
: one thousandth of a gram
—abbreviation mg

More from Merriam-Webster on milligram

Nglish: Translation of milligram for Spanish Speakers

Britannica.com: Encyclopedia article about milligram

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