(archaic) An early form of jigsaw puzzle, made from a map or other picture.

(algebraic geometry) A morphism between algebraic varieties.

(topology) a quotient map

(topology) A surjective, continuous function from one topological space to another one, such that the latter one's topology has the property that if the inverse image (under the said function) of some subset of it is open in the function's domain, then the subset is open in the target space.

(geometry, differential geometry) A map from a given oriented surface in Euclidean space to the unit sphere which maps each point on the surface to a unit vector orthogonal to the surface at that point.

plural of map lichen

Rhizocarpon geographicum, a lichen that grows in patches on rocks in mountainous areas, giving the appearance of a map.

centimorgan

(mathematics) The intersection of a periodic orbit in the state space of a continuous dynamical system with a certain lower-dimensional subspace (the Poincaré section), transversal to the flow of the system.

(Australia, slang) The female pubic hair.