plural of local derby

(topology) Of a topological space: such that, for every point of the space, there is a neighborhood of that point whose closure is compact.

In telegraphy, the source of power that actuates the telegraphic station recording instruments, as distinguished from the source of power that furnishes current to the line.

plural of local battery

(algebra, of a group) Such that each of its nontrivial, finitely generated subgroups maps homomorphically onto ℤ.

(object-oriented programming) A class that is declared in the body of a function, and can only be referred to in the rest of the function.

plural of local class

plural of local hero

A person who is regarded as a hero in local society.

(rail transport) A train (either the service or the train itself) making stops at all stations along its route.