noun🔗ShareA layer that lies underneath another."The archeologists carefully brushed away the topsoil to reveal the ancient Roman mosaic's substratum of packed sand. "materialgeologystructureChat with AIVocabulary GamePractice Reading
noun🔗ShareThe underlying cause or basis of something."The substratum of her anxiety was the pressure to succeed in school. "theoryphilosophyscienceChat with AIVocabulary GamePractice Reading
noun🔗ShareA substrate."The artist painted a layer of gesso on the canvas to create a smooth substratum for the oil paints. "materialsubstanceChat with AIVocabulary GamePractice Reading
