various in kind or quality; many in number; numerous; multiplied; complicated.-exhibited at divers times or in various ways; -- used to qualify nouns in the singular number.-a copy of a writing made by the manifold process.-a cylindrical pipe fitting, having a number of lateral outlets, for connecting one pipe with several others.-the third stomach of a ruminant animal.-to take copies of by the process of manifold writing; as, to manifold a letter.