Definition of insulated in US English:

insulated

adjective

  • 1Protected by interposing material that prevents the loss of heat or the intrusion of sound.

    ‘an insulated loft’
    1. 1.1 Covered in nonconducting material to prevent the passage of electricity.
      ‘insulated wire’

Pronunciation

insulated

/ˈinsəˌlādəd//ˈɪnsəˌleɪdəd/