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insulate

[in-suh-leyt, ins-yuh-]
verb (used with object), in·su·lat·ed, in·su·lat·ing.
  1. to cover, line, or separate with a material that prevents or reduces the passage, transfer, or leakage of heat, electricity, or sound: to insulate an electric wire with a rubber sheath; to insulate a coat with down.
  2. to place in an isolated situation or condition; segregate.
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Origin of insulate

First recorded in 1530–40, insulate is from the Latin word insulātus made into an island. See insula, -ate1
Related formsnon·in·su·lat·ing, adjectivepre·in·su·late, verb (used with object), pre·in·su·lat·ed, pre·in·su·lat·ing.re·in·su·late, verb (used with object), re·in·su·lat·ed, re·in·su·lat·ing.su·per·in·su·lat·ed, adjectiveun·in·su·lat·ed, adjectivewell-in·su·lat·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for non-insulating

insulate

verb (tr)
  1. to prevent or reduce the transmission of electricity, heat, or sound to or from (a body, device, or region) by surrounding with a nonconducting material
  2. to isolate or detach
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Word Origin

C16: from Late Latin insulātus: made into an island
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for non-insulating

insulate

v.

1530s, "make into an island," from Latin insulatus, from insula (see insular). Sense of "cause a person or thing to be detached from surroundings" is from 1785. Electrical/chemical sense of "block from electricity or heat" is from 1742. Related: Insulated; insulating.

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Online Etymology Dictionary, © 2010 Douglas Harper