2. (Math.)

Defn: The calculus; fluxions. [R.]

RHEOMOTOR
Rhe"o*mo`tor, n. Etym: [Gr.motor.] (Elec.)

Defn: Any apparatus by which an electrical current is originated.
[R.]

RHEOPHORE Rhe"o*phore, n. Etym: [Gr. (Elec.) (a) A connecting wire of an electric or voltaic apparatus, traversed by a current. (b) One of the poles of a voltaic battery; an electrode.

RHEOSCOPE
Rhe"o*scope, n. Etym: [Gr. -scope.] (Physics)

Defn: An instrument for detecting the presence or movement of currents, as of electricity.

RHEOSTAT
Rhe"o*stat, n. Etym: [Gr. (Elec.)

Defn: A contrivance for adjusting or regulating the strength of electrical currents, operating usually by the intercalation of resistance which can be varied at will. Wheatstone. —Rhe`o*stat"ic, a.

RHEOTOME
Rhe"o*tome, n. Etym: [Gr. (Elec.)