Insulant

ahd-5
  • noun. A material used for insulation; an insulator.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. Any material used to provide insulation
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. a material that reduces or prevents the transmission of heat or sound or electricity
  • Word Usage
    "But tinted windows not only saves on your interior but acts as an insulant on the glass, which obviously helps when you're running the air conditioner."
    Hypernym
    Words that are more generic or abstract
    Hyponym
    Words that are more specific