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 treatment group received a high dose omega-3 algae supplement (2,000 milligrams of DHA) each day for 24 months. Sandee Lamotte, CNN Money, 18 June 2026 An average single shot of espresso has about 64 milligrams of caffeine. Karla Walsh, Better Homes & Gardens, 16 June 2026 New research suggests that most people don't consume 500 milligrams of flavanols per day. Stephanie Anderson Witmer, Health, 16 June 2026 These kinds of fireworks include items like firecrackers, Roman candles, bottle rockets and other fireworks with a maximum of 50 milligrams of explosive material, according to Pennsylvania State Police. Finch Walker, USA Today, 12 June 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

Browse Nearby Words

Cite this Entry

“Milligram.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/milligram. Accessed 24 Jun. 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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