The US Food and Drug Administration defines this limit as anything more than 400 milligrams of caffeine daily for healthy adults.2024 March 11, Jocelyn Solis-Moreira, “Dark roasted and dangerous: Everything you should know about caffeine intoxication”, in CNN:
And as little as 1 milligram of yellow dye No. 5 may cause irritability, restlessness and sleep disturbances for sensitive children.2025 March 29, Kristen Rogers, “Over half of US states are trying to eliminate food dyes. Here’s what you can do now”, in CNN:

Forms of milligram

plural	milligrams
alternative UK	milligramme

Origin of milligram

Borrowed from French milligramme, equivalent to milli- + gram.

What does milligram mean?: Milligram means an SI unit of mass equal to 10⁻³ grams. Symbol: mg.
What is milligram in Hindi?: Milligram in Hindi is मिलीग्राम (milīgrām). See Milligram meaning in Hindi.
How do you use milligram in a sentence?: The US Food and Drug Administration defines this limit as anything more than 400 milligrams of caffeine daily for healthy adults.
What part of speech is milligram?: Milligram is a noun.
How do you pronounce milligram?: Milligram is pronounced /ˈmɪlɪɡɹæm/ (US).
What is the plural of milligram?: The plural of milligram is milligrams.

Adapted from Wiktionary: milligram (page history and authors); milligram (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vininn126-milligram.wav.

Cite this entry: “milligram.” Word.ws, https://word.ws/milligram. Based on Wiktionary, CC BY-SA 4.0.