'Insulation' definitions:

Definition of 'insulation'

From: WordNet
noun
The state of being isolated or detached; "the insulation of England was preserved by the English Channel" [syn: insulation, insularity, insularism, detachment]
noun
A material that reduces or prevents the transmission of heat or sound or electricity [syn: insulating material, insulant, insulation]
noun
The act of protecting something by surrounding it with material that reduces or prevents the transmission of sound or heat or electricity

Definition of 'Insulation'

From: GCIDE
  • Insulation \In`su*la"tion\, n.
  • 1. The act of insulating, or the state of being insulated; detachment from other objects; isolation. [1913 Webster]
  • 2. (Elec. & Thermotics) The act of separating a body from others by nonconductors, so as to prevent the transfer of electricity or of heat; also, the state of a body so separated. [1913 Webster]
  • 3. The material or substance used to insulate from either electrical or thermal conduction; as, fiberglass is used as thermal insulation in the walls and roofs of houses. [Webster 1913 Suppl. +PJC]