molecular UK /məˈlɛk.jʊ.lə/US /məˈlɛk.jə.ləɹ/adjective 4noun 1forms 1 adjective4 •Relating to, or consisting of, or produced by molecules. •(of an element) Combined with itself and with no other element; elemental. •Relating to molecular gastronomy.molecular dishes •Relating to a simple or basic structure or organization. noun1 •Any compound having a specified (range of) molecular weight(s) formsmoleculars