barrierlayer
nounUK /ˈbæriəˌleɪə/
US /ˈbæriərˌleɪər/
A barrier layer is a thin wall that stops things from passing through.
The barrier layer on the phone keeps water out.
RELATED WORDS
OTHER MEANINGS
2. In electronics, a thin layer that stops electricity or heat from moving between parts.
The chip's barrier layer prevents the metals from mixing.
3. In materials science, a coating that keeps moisture or gas from getting through.
The packaging has a barrier layer to keep the food fresh.
4. In ocean science, a thin layer of water where temperature or salt changes quickly.
Scientists measured the barrier layer just below the surface.
5. In skin care, a protective outer layer that keeps moisture in.
Use lotion to protect your skin's barrier layer.