surface
mathematical idealization of the surface of a body
ovoid
sphere-like surface in projective space of dimension d ≥ 3
synclastic
surface whose Gaussian curvature is everywhere positive
pleated surface
type of geometric surface with folds
plane
flat, infinite two-dimensional surface
Klein bottle
type of non-orientable surface
Fermi surface
an abstract boundary in reciprocal space useful for predicting the thermal, electrical, magnetic, and optical properties of metals, semimetals, and doped semiconductors
physical surface
two-dimensional boundary of three-dimensional object
anticlastic
surface whose Gaussian curvature is everywhere negative
quadric surface
locus of zeros of a quadratic polynomial in a three-dimensional space (affine or projective, not necessarily real)
Boy's surface
three-dimensional self-intersecting surface, an immersion of the real projective plane
pseudosphere
geometrix surface
translation surface
surface generated by translations