: a unit of mass equal to 1/1000 gram see Metric System Table

Examples of milligram in a Sentence

Recent Examples on the Web
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Each spray of Activation Ease provides 22 milligrams of magnesium and absorbs in less than 90 seconds, the outlet reported, and the lower dose may help prevent skin irritation after use. Samantha Agate, Sacbee.com, 21 Aug. 2026 The outlet named Activation Ease Magnesium Spray its top pick for everyday use, noting that each spray delivers 22 milligrams of magnesium and absorbs in under 90 seconds. Samantha Agate, Fort Worth Star-Telegram, 21 Aug. 2026 Dietary guidelines recommend that most adults eat less than 2,300 milligrams of sodium per day, so consuming just 10 milliliters of soy sauce amounts to nearly one-third of your daily sodium limit. Merve Ceylan, HEALTH, 21 Aug. 2026 It is recommended that pregnant women consume 300-600 milligrams of daily DHA. Bestreviews, Mercury News, 19 Aug. 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 24 Aug. 2026.

Kids Definition

milligram

noun
: 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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