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

Ferguson prescribed 120 milligrams of oxycodone per day to two patients — one for chronic pain and partial quadriplegia following an accident, and another for ankle and shoulder pain. —Amber Gaudet, Charlotte Observer, 27 Apr. 2026

In laboratory settings, the researchers use the material to extract 406 milligrams of uranium per gram. —Ameya Paleja, Interesting Engineering, 27 Apr. 2026

Klinger recommends three or four cups, or roughly 300 to 400 milligrams of caffeine, in order to maximize health benefits while minimizing significant risks. —Embry Roberts, Martha Stewart, 25 Apr. 2026

This bottle contains 110 tablets, each with 595 milligrams of potassium gluconate or 99 milligrams of pure potassium. —Bestreviews, Mercury News, 24 Apr. 2026

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