Search Result for "insulator": 
Wordnet 3.0

NOUN (1)

1. a material such as glass or porcelain with negligible electrical or thermal conductivity;
[syn: insulator, dielectric, nonconductor]



The Collaborative International Dictionary of English v.0.48:

Insulator \In"su*la`tor\, n.
   1. One who, or that which, insulates.
      [1913 Webster]

   2. (Elec. & Thermotics) A substance or object that insulates;
      a nonconductor; as, polyurethane foam is a popular thermal
      insulator.
      [1913 Webster +PJC]


WordNet (r) 3.0 (2006):

insulator
    n 1: a material such as glass or porcelain with negligible
         electrical or thermal conductivity [syn: insulator,
         dielectric, nonconductor] [ant: conductor]