1. the outer face, outside, or exterior boundary of a thing; outermost or uppermost layer or area. 2. any face of a body or thing: the six surfaces of a cube.
What is the plural of surface?
surface. plural. surfaces. DEFINITIONS4. countable the top layer or outside part of something.
Is surface an adverb Yes or no?
surface (adjective) surface–to–air missile (noun)