differential

Of or pertaining to a difference.

differential characteristics

I saved disk space by taking differential backups, which only stored the data that had changed.

Dependent on, or making a difference; distinctive.

Having differences in speed or direction of motion.

Of or pertaining to differentiation or the differential calculus.

The differential gear in an automobile, etc.

A qualitative or quantitative difference between similar or comparable things.

One of two coils of conducting wire so related to one another or to a magnet or armature common to both, that one coil produces polar action contrary to that of the other.

A form of conductor used for dividing and distributing the current to a series of electric lamps so as to maintain equal action in all.

A quantity representing an infinitesimal change in a variable, now only used as a heuristic aid except in nonstandard analysis but considered rigorous until the 20th century; a fluxion in Newtonian calculus, now usually written in Leibniz's