chemical formula [chemical formulas](alternative name for molecular formula) noun [UK: ˈke.mɪk.l̩ ˈfɔː.mjʊ.lə] [US: ˈke.mək.l̩ ˈfɔːr.mjə.lə]
molecular formula [molecular formulas](a notation indicating the number of atoms of each element present in a molecule) noun [UK: mə.ˈle.kjʊ.lə(r) ˈfɔː.mjʊ.lə] [US: mə.ˈle.kjə.lər ˈfɔːr.mjə.lə]