1. the state of being isolated or detached (Freq. 1) - the insulation of England was preserved by the English Channel • Syn: insularity, insularism, detachment • Derivationally related forms: insular (for: insularity), insulate • Hypernyms: isolation 2. a material that reduces or prevents the transmission of heat or sound or electricity • Syn: insulating material, insulant • Derivationally related forms: insulate, insulate (for: insulant) • Hypernyms: building material • Hyponyms: lagging, corkboard 3. the act of protecting something by surrounding it with material that reduces or prevents the transmission of sound or heat or electricity • Derivationally related forms: insulate • Hypernyms: protection • Hyponyms: lining
