Is “Insulator” a Scrabble word?
Yes
INSULATOR
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Insulator
/ˈɪn.sjə.leɪ.tə(ɹ)/
noun
1.A substance that does not transmit heat (thermal insulator), sound (acoustic insulator) or electricity (electrical insulator).
2.A non-conductive structure, coating or device that does not transmit sound, heat or electricity (see image)
“To isolate electrical wires from the pylons supporting them, one often uses glass insulators.”
3.A person who installs insulation.
Synonyms: insulant, isolation