- any material or device that insulates, esp a material with a very low electrical conductivity or thermal conductivity or something made of such a material
WordReference Random House Unabridged Dictionary of American English © 2020
in•su•la•tor (in′sə lā′tər, ins′yə-),USA pronunciation n.
- a material of such low conductivity that the flow of current through it is negligible.
- insulating material, often glass or porcelain, in a unit form designed so as to support a charged conductor and electrically isolate it.
- a person or thing that insulates.
- insulate + -or2 1795–1805
Collins Concise English Dictionary © HarperCollins Publishers::
WordReference Random House Learner's Dictionary of American English © 2020
insulator /ˈɪnsjʊˌleɪtə/ n
in•su•late /ˈɪnsəˌleɪt, ˈɪnsyə-/USA pronunciation v. [~ + object], -lat•ed, -lat•ing.WordReference Random House Unabridged Dictionary of American English © 2020
- Buildingto cover or separate with a material that prevents or reduces the passage of heat, electricity, or sound:They insulated the pipes and windows.
- to protect (someone) too much :You can't insulate your children from evil forever.
in•su•late (in′sə lāt′, ins′yə-),USA pronunciation v.t., -lat•ed, -lat•ing.
- Buildingto cover, line, or separate with a material that prevents or reduces the passage, transfer, or leakage of heat, electricity, or sound:to insulate an electric wire with a rubber sheath; to insulate a coat with down.
- to place in an isolated situation or condition;
- Latin insulātus made into an island. See insula, -ate1
'insulator' also found in these entries:
Josephson junction - Muscovite - amber - bead - boron nitride - break - breakdown voltage - cork - diatomite - dielectric - energy band - expanded - fiberglass - flashover - hole - leakage - metal oxide semiconductor - myelin sheath - perlite - petticoat insulator - polystyrene - semiconductor - standoff