milligram

M3I1L1L1I1G2R1A1M3
US/ˈmɪlɪɡɹæm/

noun

An SI unit of mass equal to 10⁻³ grams. Symbol: mg

“Meronyms: picogram < nanogram < microgram”

Similar
Less commonScrabble 14

Meanings

nounmilligram (plural milligrams)

plural milligrams · alternative UK milligramme

  1. metrologyAn SI unit of mass equal to 10⁻³ grams. Symbol: mg

    Meronyms: picogram < nanogram < microgram

    3 more examples

    Holonyms: gram < kilogram < megagram < gigagram

    The US Food and Drug Administration defines this limit as anything more than 400 milligrams of caffeine daily for healthy adults. This is equivalent to four or five cups of coffee.

    2024 March 11, Jocelyn Solis-Moreira, “Dark roasted and dangerous: Everything you should know about caffeine intoxication”, in CNN

    Blue No. 1 and yellow No. 6 may also be toxic to some human cells. 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

Synonyms & antonyms

nounone thousandth (1/1,000) gram

Similar
Broader
metric weight unitweight unit
Also see

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Frenchmilligramme
  2. Englishmilligram

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

Full word history & related roots →

Translations

Afrikaans milligram
  • milligrammilligram
Arabic مِلِّيغْرَام
  • مِلِّيغْرَام (millīḡrām)milligram
Bengali মিলিগ্রাম
  • মিলিগ্রাম (miligram)milligram
Catalan mil·ligram
  • mil·ligrammilligram
Chinese Mandarin 毫克
  • 毫克 (háokè)milligram
Czech miligram
  • miligrammilligram
Danish milligram
  • milligrammilligram
Esperanto miligramo
  • miligramomilligram
Finnish milligramma
  • milligrammamilligram
French milligramme
  • milligrammemilligram
German Milligramm
  • Milligrammmilligram
Greek χιλιοστόγραμμο
  • χιλιοστόγραμμο (chiliostógrammo)milligram
Hindi मिलीग्राम
  • मिलीग्राम (milīgrām)milligram
Hungarian milligramm
  • milligrammmilligram
Italian milligrammo
  • milligrammomilligram
Japanese ミリグラム
  • ミリグラム (miriguramu)milligram
Korean 밀리그램
  • 밀리그램 (milligeuraem)milligram
Norwegian Bokmål milligram
  • milligrammilligram
Polish miligram
  • miligrammilligram
Portuguese miligrama
  • miligramamilligram
Romanian miligram
  • miligrammilligram
Russian миллигра́мм
  • миллигра́мм (milligrámm)milligram
Spanish miligramo
  • miligramomilligram
Swedish milligram
  • milligrammilligram
Tagalog miligramo
  • miligramomilligram
Thai มิลลิกรัม
  • มิลลิกรัม (min-lí-gram)milligram
Vietnamese miligam
  • miligammilligram
Yiddish מיליגראַם
  • מיליגראַם (miligram)milligram
Cite this entry
APA

milligram. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/milligram

MLA

“milligram.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/milligram. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “milligram,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/milligram.

Source: milligram on Wiktionary, CC BY-SA 4.0.