"manifold" in the noun sense
1. manifold
a pipe that has several lateral outlets to or from other pipes
2. manifold paper, manifold
a lightweight paper used with carbon paper to make multiple copies
"an original and two manifolds"
3. manifold
a set of points such as those of a closed surface or an analogue in three or more dimensions
"manifold" in the verb sense
1. manifold
make multiple copies of
"multiply a letter"
2. multiply, manifold
combine or increase by multiplication
"He managed to multiply his profits"
"manifold" in the adjective sense
1. manifold, multiplex
many and varied having many features or forms
"manifold reasons"
"our manifold failings"
"manifold intelligence"
"the multiplex opportunities in high technology"
Source: WordNet® (An amazing lexical database of English)
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