man·i·fold
ˈmanəˌfōld/
adjective
adjective: manifold
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1.many and various.“the implications of this decision were manifold”
noun
noun: manifold; plural noun: manifolds
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1.a pipe or chamber branching into several openings.“the pipeline manifold”
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(in an internal combustion engine) the part conveying air and fuel from the carburetor to the cylinders or that leading from the cylinders to the exhaust pipe.“the exhaust manifold”
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2.technicalsomething with many different parts or forms, in particular.
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Mathematicsa collection of points forming a certain kind of set, such as those of a topologically closed surface or an analog of this in three or more dimensions.
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(in Kantian philosophy) the sum of the particulars furnished by sense before they have been unified by the synthesis of the understanding.
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Origin
Old English manigfeald ; current noun senses date from the mid 19th cent.