insulation

noun

in·​su·​la·​tion ˌin(t)-sə-ˈlā-shən 

1

: material used in insulating

2

a

: the state of being insulated

b

: the action of insulating

Synonyms

• aloneness
• isolation
• privacy
• secludedness
• seclusion
• segregation
• separateness
• sequestration
• solitariness
• solitude

Examples of insulation in a Sentence

These materials provide the insulation needed in cold weather.

she had grown up in such rural insulation that she'd never met anyone of a different race

Recent Examples on the Web

What to Consider The insulation combined with the surface fabric makes for a crinkly night. —Maggie Slepian, Travel + Leisure, 11 Feb. 2025

For example, homeowners can use it to check the energy efficiency of their home when identifying areas where heat may be leaking and where insulation needs beefing up. —Mark Sparrow, Forbes, 1 Feb. 2025

Make repairs before washing the item or the insulation will escape. —Mary Marlowe Leverette, Southern Living, 31 Jan. 2025

The thin layer of silicon dioxide insulation separating the gate from the channel, having been thinned down tenfold since the middle of the 1990s, was now just five atoms thick. —IEEE Spectrum, 29 Jan. 2025

Word History

First Known Use

1798, in the meaning defined at sense 2b

Kids Definition

insulation

noun

in·​su·​la·​tion ˌin(t)-sə-ˈlā-shən 

1

: the act of insulating : the state of being insulated

2

: material used in insulating

Medical Definition

insulation

noun

in·​su·​la·​tion ˌin(t)-sə-ˈlā-shən 

1

: the action of separating a conductor from conducting bodies by means of nonconductors so as to prevent transfer of electricity, heat, or sound

also : the state resulting from such action

2

: material used to provide insulation

insulate

ˈin(t)-sə-ˌlāt 

transitive verb

insulated; insulating