Insulation is the process of keeping heat, sound, or electricity from spreading. It's also the material used to do so. If you can hear your neighbor snoring at night, you might need better sound insulation.

Your thermos of hot chocolate stays warm when it's freezing outside because the thermos provides insulation. Similarly, the insulation in an ice chest keeps your sodas and food cool at the beach, even when you're being scorched by the sun. Insulation can also refer to a state of being detached or isolated. If you stay at home and avoid TV, the internet, and phone calls, you are in a state of insulation.

Definitions of insulation
  1. noun
    the act of protecting something by surrounding it with material that reduces or prevents the transmission of sound or heat or electricity
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    the act of attaching an inside lining (to a garment or curtain etc.)
    type of:
    the activity of protecting someone or something
  2. noun
    the state of being isolated or detached
    “the insulation of England was preserved by the English Channel”
    synonyms: detachment, insularism, insularity
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    type of:
    a state of separation between persons or groups
  3. noun
    a material that reduces or prevents the transmission of heat or sound or electricity
    synonyms: insulant, insulating material
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    used to wrap around pipes or boilers or laid in attics to prevent loss of heat
    a heat-insulating building material consisting of cork granules that are made into sheets by compressing and baking
    type of:
    building material
    material used for constructing buildings
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