Commonly, the unqualified term manifoldis used to mean  manifold with boundary .. This is the usage followed in this work. However, an author will sometimes be more precise and use the term open manifold for a noncompact manifold without boundary or closed manifold for a compact manifold with boundary.
http://mathworld.wolfram.com/Manifold.html
Noun. 1. intake manifold-a manifold consisting of a pipe to carry fuel to each cylinder in an internal-combustion engine. fuel system-equipment in a motor vehicle or aircraft that delivers fuel to the engine. manifold-a pipe that has several lateral outlets to or from other pipes.
http://www.thefreedictionary.com/intake+manifold
The dimension of the manifold at a certain point is the dimension of the Euclidean space that the charts at that point map to (number n in the definition). All points in a connected manifold have the same dimension. Some authors require that all charts of a topological manifold map to Euclidean spaces of same dimension.
https://en.wikipedia.org/wiki/Manifold
A manifold may be endowed with more structure than a locally Euclidean topology. For example, it could be smooth, complex, or even algebraic (in order of specificity). A smooth manifold with a metric is called a Riemannian manifold, and one with a symplectic structure is called a symplectic manifold.
http://mathworld.wolfram.com/Manifold.html
More precisely, each point of an n-dimensional manifold has a neighbourhood that is homeomorphic to the Euclidean space of dimension n. Lines and circles, but not figure eights, are one-dimensional manifolds. Two-dimensional manifolds are also called surfaces.
https://en.wikipedia.org/wiki/Manifold
manifold ‎(third-person singular simple present manifolds, present participle manifolding, simple past and past participle manifolded). ( 1 transitive) To make manifold; multiply. ( 2 transitive, printing) To multiply or reproduce impressions of by a single operation.
https://en.wiktionary.org/wiki/manifold
Noun [edit]. manifold ‎(plural manifolds). ( 1 now historical) A copy made by the manifold writing process. ( 2 mechanics) A pipe fitting or similar device that connects multiple inputs or outputs. ( 3 US, regional, in the plural) The third stomach of a ruminant animal, an omasum. 4  1830 Anson, Somerset Co. 5  Me.
https://en.wiktionary.org/wiki/manifold
Although a manifold resembles Euclidean space near each point, globally it may not. For example, the surface of the sphere is not a Euclidean space, but in a region it can be charted by means of map projections of the region into the Euclidean plane (in the context of manifolds they are called charts).
https://en.wikipedia.org/wiki/Manifold
20 Words related to manifold. 1  bamberg. 2  hydrotest. 3  multifarious. 4  exast. 5  exhast. 6  exhaust. 7  frabulator valve. 8  fuel evaporation. 9  gay sex. 10  header. 11  heat exchange. 12  idle. 13  merzy manifold. 14  muffler. 15  poo. 16  titty-fucking. 17  warmup. 18  zoorst. 19  zorst. ' 20 zorst.
http://www.urbandictionary.com/define.php?term=manifold
If a manifold contains its own boundary, it is called, not surprisingly, a  manifold with boundary .. The closed unit ball in is a manifold with boundary, and its boundary is the unit sphere. The concept can be generalized to manifolds with corners. By definition, every point on a manifold has a neighborhood together with a homeomorphism of that neighborhood with an open ball in. In addition, a manifold must have a second countable topology.
http://mathworld.wolfram.com/Manifold.html
define: manifold
Manifold is defined as to multiply or reproduce impressions of by a single operation. Manifold is to multiply or reproduce impressions of by a single operation.