1 definition by KoisterKloitch

bordism

A bordism is an equivalence relalation between maninfolds. Two n dimensional manifolds are bordant if their is an n+1 dimensional manifold whose boundary is the disjoint union of the two n dimensional manifolds

A pair of pants is a bordism between the circle and the disjoint union of two circles.

by KoisterKloitch March 10, 2012