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insulate

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in⋅su⋅late

  [in-suh-leyt, ins-yuh-]
Use insulate in a Sentence
–verb (used with object), -lat⋅ed, -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.
Origin:
1530–40; < L insulātus made into an island. See insula, -ate 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To insulate
Efficient Home Insulating
Properly Insulate & Save Energy w/ Home Performance with Energy Star.
www.CBPCA.org
Attic & Wall Insulation
Installed for you - FREE Estimate $ave on Energy Costs 1-800-708-4828
www.AHCservice.com
in·su·late   (ĭn'sə-lāt', ĭns'yə-)   
tr.v.   in·su·lat·ed, in·su·lat·ing, in·su·lates

  1. To cause to be in a detached or isolated position. See Synonyms at isolate.

  2. To prevent the passage of heat, electricity, or sound into or out of, especially by surrounding with a nonconducting material.


[Latin īnsula, island + -ate1.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

insulate 
1538, "make into an island," from L. insulatus (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. Insulation "insulating material" is from 1870.
Online Etymology Dictionary, © 2001 Douglas Harper
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