milligram

noun

mil·​li·​gram ˈmi-lə-ˌgram 

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

Examples of milligram in a Sentence

Recent Examples on the Web

Depo-Provera is extremely high dose—150 milligrams. —Lucy Notarantonio, MSNBC Newsweek, 28 Sep. 2025

My first infusion was 50 milligrams for 90 minutes, and over time increased to 95 milligrams over 75 minutes, with the addition of magnesium to alleviate anxiety. —Soph Warnes, CNN Money, 28 Sep. 2025

Scientists at Mass General Brigham in Boston tracked nearly 600 adults averaging 70 years old who took either 500 milligrams of cocoa extract or a placebo every day for two years. —Deirdre Bardolf, FOXNews.com, 27 Sep. 2025

Key Takeaways Take less than 1 milligram of melatonin to avoid side effects like headaches and confusion. —Maggie O'Neill, Verywell Health, 26 Sep. 2025

Word History

Etymology

French milligramme, from milli- + gramme gram

First Known Use

1797, in the meaning defined above

Rhymes for milligram

• abraham
• anagram
• cablegram
• cofferdam
• dendrogram
• diagram
• diaphragm
• epigram
• hexagram
• histogram
• hologram
• instagram

Kids Definition

milligram

noun

mil·​li·​gram ˈmil-ə-ˌgram 

: a weight equal to ¹⁄₁₀₀₀ gram see metric system

Medical Definition

milligram

noun

mil·​li·​gram

variants or chiefly British milligramme

-ˌgram 

: one thousandth of a gram

—abbreviation mg