supercomposite noun3 •An amalgam of composites; a combination of elements that are themselves combinations.In order to determine if the amount of variance explained by drifters was significantly higher than that of groupthink, I created a supercomposite by collapsing across all unsuccessful cases. — 1996 •Any of several high-performance structural composite materials. •A model of subatomic particles that combines supersymmetry with the study of composite particles. formssupercomposites