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insulator (n.)
1801, agent noun in Latin form from insulate (v.). In reference to the glass or earthenware devices to hold telegraph (later telephone) wires, from 1840s.
updated on December 13, 2015
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Dictionary entries near insulator
insular
insularism
insularity
insulate
insulation
insulator
insulin
insult
insulting
insuperable
insupportable