The act of insulating or the state of being insulated.(noun)
A material or substance used in insulating: soundproof cork insulation; a layer of trapped air that serves as insulation. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "insulation" in a sentence
"So, for a 29% increase in insulation you get an 11% return in efficiancy."
"You would think that is a 29% increase in insulation value."
"In Chiapas, we do not need what you refer to as "nob type insulation" as what we use there for insulation is three foot thick adobe walls that take up more space than your entire living room in that tarpaper shack of yours in Crapola but we must admit that we need propane heaters as we lack your incessant hot air bloviating forth to heat our maison you Alberta clodhopper."