insulation
UK/.insju'leiʃәn. 'insә-/US
TOEFLA1
Definitions
n.
Material used to stop heat, electricity, or sound from passing through something
绝缘材料；隔热（隔音）材料
n.
The act of insulating, or the state of being insulated or protected
绝缘，隔热；隔离（状态）
Root Breakdown
Root-derivedinsulate (make into an island) + -ion (act/result) = the act of insulating, or the material that does it. The foam in your walls is insulation because it turns the room into a thermal island.
Root insul still carries 7 more wordsCommon Collocations
- 1.thermal insulation隔热
- 2.sound insulation隔音
- 3.loft insulation阁楼隔热层
- 4.electrical insulation电气绝缘
Example Sentences
- 1.
Good loft insulation can dramatically lower your heating costs.
- 2.
The old cable had lost its insulation and was dangerous to touch.
- 3.
Double glazing adds a layer of sound insulation against street noise.