formal
: many and various
the country's manifold problems
The benefits of this approach are manifold.
plural manifolds
technical
: a part of an engine that connects different pipes for moving fuel and air into the engine or for carrying gases away from the engine
an intake manifold [=a manifold that brings fuel and air into an engine]
an exhaust manifold
Cite this Entry
“Manifold.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/manifold. Accessed 15 Jun. 2026.
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