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English definition of “milligram”

milligram

noun [C] uk (UK also milligramme)   /ˈmɪl.ɪ.ɡræm/ (written abbreviation mg) us  
a unit of mass that is equal to 0.001 gramsMeasurements of weight and mass
(Definition of milligram from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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