noun🔗ShareMillimètreAn SI/MKS unit of measure, the length of 1/1000 of a meter. Symbol: mm"The carpenter needed to be precise; he measured the wood to the nearest few millimeters. "Le charpentier devait être précis ; il a mesuré le bois au millimètre près.unitsciencemathtechnicalChat with AIVocabulary GamePractice Reading