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

Yeti Rambler 10-ounce Tumbler Small, but mighty, this 10-ounce Yeti tumbler is packed with the premium features the brand’s water bottles are known for—durable stainless steel, double-wall vacuum insulation, and the signature MagSlider lid. —Chaise Sanders, Travel + Leisure, 15 Sep. 2025

To him, gold is a command center—a tangible, sovereign store of value that can serve as the foundation for trusts, portfolios, tax strategies, philanthropic giving, and geopolitical insulation. —William Jones, USA Today, 11 Sep. 2025

There's also a slot for inserting a third-party sleeping pad for extra comfort and insulation. —New Atlas, 11 Sep. 2025

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