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.
Nicorette gum, which is approved as a therapy to help people quit smoking, contains 2 to 4 milligrams of nicotine. — Erika Edwards, NBC news, 30 June 2026 Water hardness is measured by the milligrams of calcium carbonate per liter of water(mg/L). — Mary Marlowe Leverette, Southern Living, 23 June 2026 The table below spells them out in grams (g), milligrams (mg), micrograms (mcg), and international units (IU). — Lana Barhum, Verywell Health, 1 July 2026 So in August 2025, the Ayvakit dose was increased again to 125 milligrams. — Shannon Dingey, Health, 1 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

See All Rhymes for milligram

Browse Nearby Words

milligauss
milligram
millihenry
See all Nearby Words

Cite this Entry

“Milligram.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/milligram. Accessed 7 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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