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
Tips for Safe Caffeine Consumption The FDA considers 400 milligrams of caffeine (about two or three 12-ounce cups of coffee) safe daily.
—
Ashley Wong, Health, 17 Feb. 2025
Children ages 12 to 18 should not exceed 100 milligrams of caffeine per day.
—Katia Hetter, CNN, 13 Feb. 2025
Women need 310 to 320 milligrams (mg) of magnesium a day, while men need 400 to 420 mg.
—Maggie O'Neill, Verywell Health, 11 Feb. 2025
Two milligrams of fentanyl can be lethal, depending on a person’s body size.
—Gabrielle M. Etzel, Washington Examiner - Political News and Conservative Analysis About Congress, the President, and the Federal Government, 6 Feb. 2025
See all Example Sentences for milligram 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Ashley Wong, Health, 17 Feb. 2025
Children ages 12 to 18 should not exceed 100 milligrams of caffeine per day.
—Katia Hetter, CNN, 13 Feb. 2025
Women need 310 to 320 milligrams (mg) of magnesium a day, while men need 400 to 420 mg.
—Maggie O'Neill, Verywell Health, 11 Feb. 2025
Two milligrams of fentanyl can be lethal, depending on a person’s body size.
—Gabrielle M. Etzel, Washington Examiner - Political News and Conservative Analysis About Congress, the President, and the Federal Government, 6 Feb. 2025
See all Example Sentences for milligram
Dictionary Entries Near milligram
Cite this Entry
“Milligram.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/milligram. Accessed 21 Feb. 2025.
Copy CitationKids 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
: one thousandth of a gram
—abbreviation mg
Love words? Need even more definitions?
Merriam-Webster unabridged
Share