Dictionary.com
definitions
  • synonyms

insulation

[in-suh-ley-shuh n, ins-yuh-]
See more synonyms for insulation on Thesaurus.com
noun
  1. material used for insulating.
  2. the act of insulating.
  3. the state of being insulated.
Show More

Origin of insulation

First recorded in 1790–1800; insulate + -ion
Related formspre·in·su·la·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for insulation

Contemporary Examples

Historical Examples


British Dictionary definitions for insulation

insulation

noun
  1. Also called: insulant (ˈɪnsjʊlənt) material used to insulate a body, device, or region
  2. the act or process of insulating
Show More
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 insulation

n.

1848, "act of making (something) into an island," noun of action from insulate. Transferred sense attested by 1798. Electrical sense is from 1767. The concrete sense of "insulating material" is recorded by 1870.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper