surfacelayer
nounUK /ˈsɜːfɪsˌleɪə/
US /ˈsɜːrfɪsˌleɪər/
The top part of something that you can see or touch.
The surfacelayer of the cake was covered in chocolate frosting.
OTHER MEANINGS
2. The thin outer part of a material or object.
The surfacelayer of the metal had started to rust.
3. The part of something that is easy to see, but not the deeper or hidden part.
He only looked at the surfacelayer of the problem and missed the real cause.
4. A covering spread over an area of ground.
The surfacelayer of the road was slippery after the rain.