molecular weight [molecular weights](the sum of the atomic weights of every atom in a molecule) noun [UK: mə.ˈle.kjʊ.lə(r) weɪt] [US: mə.ˈle.kjə.lər ˈweɪt]
masă molecularăsubstantiv {f}
molecular mass [molecular masses](mass of single molecule) noun [UK: mə.ˈle.kjʊ.lə(r) mæs] [US: mə.ˈle.kjə.lər ˈmæs]