Concept: surface
Label (en): surface
Description (en): two-dimensional manifold, and, as such, may be an "abstract surface" not embedded in any Euclidean space
Also known as (en): surface (topology), 2-manifold
Label (es): superficie
Description (es): espacio topológico bidimensional
Also known as (es): 2-variedad
Label (ca): superfície
Description (ca): espai topològic bidimensional
Label (it): superficie
Subclass of: topological manifold, two-dimensional space