contact surface; surface area
Technical term used in physics, engineering, and materials science to refer to the surface where two objects meet or the area of that surface.
Friction occurs at the contact surface between two objects.
Please calculate the surface area of the contact surface.
mesial proximal surface
Compound of 接 (setsu, 'contact') and 面 (men, 'surface'). The exact historical derivation is uncertain, but the word is formed from standard Sino-Japanese morphemes.