molecularPronunciation: /məˈlɛkjʊlə/Translate molecular | into German | into Italian Definition of molecular adjective relating to or consisting of molecules:interactions between polymer and solvent at the molecular level molecular oxygenDerivatives molecularityPronunciation: /-ˈlarɪti/ noun molecularly adverb Spelling helpRemember that molecular ends with -ar.molecular in other Oxford dictionaries Definition of molecular in the US English dictionary