insulator Hear it!

insulator definition

in·su·la·tor (in′sə lāt′ər; -so̵o-, -syo̵o-)

noun

anything that insulates; specif.,
  1. a nonconductor of electricity, heat, or sound
  2. a device, as of glass or porcelain, for insulating and supporting electric wires

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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