manifold

⁴manifold

noun

Definition of MANIFOLD

: something that is manifold: as a : a whole that unites or consists of many diverse elements <the manifold of aspirations, passions, frustrations — Harry Slochower> b : a pipe fitting with several lateral outlets for connecting one pipe with others; also : a fitting on an internal combustion engine that directs a fuel and air mixture to or receives the exhaust gases from several cylinders c : set 21 d : a topological space in which every point has a neighborhood that is homeomorphic to the interior of a sphere in Euclidean space of the same number of dimensions

First Known Use of MANIFOLD

circa 1823