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insulator

 
Noun insulator has 1 sense
  1. insulator, dielectric, nonconductor - a material such as glass or porcelain with negligible electrical or thermal conductivity
    --1 is a kind of material, stuff
    Antonyms: conductor
    --1 has particulars: bushing; mineral wool, rock wool; glass wool
    Derived form: verb insulate1
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