1. Protected from heat, cold, noise etc, by being surrounded with an insulating material.
  2. Placed or set apart.
    an insulated house or column
  3. Isolated or separated from other conducting materials, or sources of electricity.
    Early insulated wires were covered in silk rather than plastic.
  4. Situated at so great a distance as to be beyond the effect of gravitation; said of stars supposed to be so far apart that the affect of their mutual attraction is undetectable.

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