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

Taking calcium supplements over 1,000 milligrams a day might increase heart attack risk. —Maggie O'Neill, Verywell Health, 30 Jan. 2026

For example, a small cappuccino from Dunkin' Donuts contains 118 milligrams of caffeine, while a large one contains 252 milligrams. —Jillian Kubala, Health, 30 Jan. 2026

The majority of glutathione supplements contain around 250 to 750 milligrams per serving, which is a sufficient dose for most people. —Bestreviews, Chicago Tribune, 29 Jan. 2026

The starting dose of 1.5 milligrams is available at more than 70,000 U.S. pharmacies such as CVS and Costco, as well as select telehealth providers, including Ro, LifeMD, Weight Watchers, GoodRx and Novo Nordisk’s NovoCare Pharmacy. —Annika Kim Constantino, CNBC, 5 Jan. 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