Insulator Meaning
/ˈɪn.s(j)ə.leɪ.tə(ɹ)/Definition, CEFR level B2, pronunciation, examples, and quiz.
Listen pronunciation
Definition
nounA substance that does not transmit heat (thermal insulator), sound (acoustic insulator) or electricity (electrical insulator).
nounA non-conductive structure, coating or device that does not transmit sound, heat or electricity (see image)
Sentence Examples
Space is actually a good insulator because it is difficult to transfer heat to nothing.
It's a great insulator, keeping hot foods hot and cold foods cold.
Synonyms & Antonyms
Synonyms:
None
Antonyms:
CEFR Practice Quiz
Glass acts as an ____ to prevent electrical shocks.
CEFR Practice Quiz (Alternate)
Rubber is a good ____, which is why it is used to wrap electrical wires and prevent any shocks.
Word Origin & History
From insulate + -or.
Literary Quotations & Historical Citations
"Alan Vasen worked as an insulator at this site from September 1968 through mid-April 1969. Mr. Vasen installed thousands of lineal feet of asbestos pipe covering and thousands of square feet of asbestos block insulation throughout the operating units of the Benicia refinery."
— 2007, Kenneth S. Cohen, Expert Witnessing and Scientific Testimony: Surviving in the Courtroom:
Explore More B2 Vocabulary Words
CEFR Practice Quiz
Glass acts as an ____ to prevent electrical shocks.
CEFR Practice Quiz (Alternate)
Rubber is a good ____, which is why it is used to wrap electrical wires and prevent any shocks.