nonmanifold

• non-manifold

non- +‎ manifold

nonmanifold (not comparable)

1. (mathematics) Not of or relating to manifolds.
2. (mathematics, of a topological space) Not locally resembling the "ordinary" Euclidean space ${\displaystyle \mathbb {R} ^{n}}$.
3. (computer graphics, of a polygon mesh) Not representing a continuous, closed surface (i.e. of a solid object)

• (antonym(s) of “a topological space that does not locally resemble the Euclidean space”): manifold