Wörterbuch (en): Thermal insulation
de:
Wärmedämmung (f)
fr:
Isolation thermique (f)
it:
Isolamento termico (m)
es:
Aislamiento térmico (m)
Thermal insulation is the reduction of the passage of thermal energy through a shell to protect a room or body from cooling or heating. Another, more colloquial term for thermal insulation is building insulation.