thermallayer
nounUK /ˈθɜː.məl ˈleɪ.ə/
US /ˈθɝː.məl ˈleɪ.ɚ/
A layer that keeps heat in or keeps heat out.
My winter coat has a thermal layer that keeps me warm.
RELATED WORDS
OTHER MEANINGS
2. A layer of material in clothing that holds body heat.
Wear a thermal layer under your jacket when it snows.
3. A part of a building that stops heat from escaping.
The walls have a thermal layer to keep the house cozy.
4. A layer in the air or water where temperature changes quickly.
The thermal layer in the lake keeps the deep water cold.