Definify.com

Webster 1913 Edition


Insulator

In′su-laˊtor

,
Noun.
1.
One who, or that which, insulates.

Webster 1828 Edition


Insulator

IN'SULATOR

,
Noun.
In electrical experiments, the substance or body that insulates, or interrupts the communication of electricity to surrounding objects; a non-conductor or electric.