3-manifold
manifold of dimension three
Meyerhoff manifold
manifold
Three-torus
cartesian product of 3 circles
solid figure
three-dimensional geometric body
lens space
3-manifold that is a quotient of S³ by ℤ/p actions: (z,w) ↦ (exp(2πi/p)z, exp(2πiq/p)w)
Seifert fiber space
circle bundle over a 2 dimensional orbifold
octant
one of the eight divisions of a Euclidean three-dimensional coordinate system defined by the signs of the coordinates;similar to the two-dimensional quadrant and the one-dimensional ray; the generalization of an octant is called orthant
Whitehead manifold
open 3-manifold that is contractible, but not homeomorphic to R³