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

• solitude
• privacy
• isolation
• segregation

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

Best practices for checking insulation quality is to read user reviews and consider how the bag seals. —Bestreviews, Mercury News, 9 Sep. 2025

Another reason to prune later is because the dead foliage benefits the roots by providing insulation during the winter. —Karen Brewer Grossman, Southern Living, 5 Sep. 2025

The collapse left her living room blanketed in drywall pieces and insulation bits and damaged some of her possessions. —Nathan Pilling, Kansas City Star, 5 Sep. 2025

Now that beta test vehicles have been created, the company will use those to validate ride quality, handling, braking, thermodynamics, aerodynamics and sound insulation calibrations and engineering. —Eileen Falkenberg-Hull, MSNBC Newsweek, 4 Sep. 2025

Word History

First Known Use

1798, in the meaning defined at sense 2b

Rhymes for insulation

• abdication
• aberration
• abjuration
• abnegation
• abrogation
• acceptation
• acclamation
• acclimation
• accusation
• activation
• actuation
• acylation

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