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.
The strongest benefits appeared when participants took at least 600 milligrams daily for eight weeks or longer. — Lauren Jarvis-Gibson july 18, Fort Worth Star-Telegram, 18 July 2026 When taking both supplements, do not exceed 50 milligrams of zinc per day. — Carrie Madormo, Verywell Health, 15 July 2026 The tolerable upper intake level (UL) for magnesium from supplements and medications is 350 milligrams (mg) per day. — Kirstyn Hill, Health, 14 July 2026 If the water measures below 250 milligrams of ‘total dissolved solids’ per liter, that’s the green light. — Simon Heptinstall, New Atlas, 9 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 26 Jul. 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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