definition of
insulation

[1] #1 insulation n. [insularity, insularism, detachment] the state of being isolated or detached; "the insulation of England was preserved by the English Channel". wn

[2] #2 insulation n. [insulating material, insulant] a material that reduces or prevents the transmission of heat or sound or electricity. wn

[3] #3 insulation n. the act of protecting something by surrounding it with material that reduces or prevents the transmission of sound or heat or electricity. wn