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

One player may lose less than a liter of fluid during a match, while another may lose several liters and thousands of milligrams of sodium under the same conditions. — Forbes.com, 22 July 2026

The group concluded that consuming up to 400 milligrams of caffeine daily — up to five, 8-ounce cups of coffee — is unlikely to cause harm in most adults. — Anahad O’Connor, Washington Post, 21 July 2026

Regulations adopted in 2023 limit them to no more than 1 milligram of THC per serving. — Sarah Todd, STAT, 21 July 2026

Those in the highest-consumption group averaged 191 milligrams per day, while those in the lowest group averaged 20 milligrams. — Anthony Thompson, USA Today, 21 July 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