- Word History
|part of speech:
||insulated, insulates, insulating
||to cover, line, or surround with a material that reduces or stops the movement of heat, electricity, or sound.
We insulated our house to save money on our heating bill.The wire gave off sparks because it was not properly insulated.
The word insulate
comes from insulare
, a Latin word that means "to make something like an island."