(differential geometry) A generalization of a Riemannian manifold

(differential geometry, Riemannian geometry) A real, smooth differentiable manifold whose each point has a tangent space equipped with a positive definite inner product;

Alternative form of manic depression

Alternative letter-case form of manifest destiny

Obsolete form of maniac.

(obsolete) manageable

A manifold which is infinitely differentiable (C ᪲).

(programming) A typing where the software programmer explicitly identifies the type of each declared variable.

(Roman mythology) The goddess of the dead and ghosts.

(aviation) A substitute ticket issued by an airline due to a schedule change or other disruption to their service, allowing travel on another airline.