dynamo

n. A dynamo-electric machine. [ 1913 Webster ]

a. [ Gr. &unr_; power + E. electric. See Dynamic. ] Pertaining to the development of electricity, especially electrical currents, by power; producing electricity or electrical currents by mechanical power. [ 1913 Webster ]

n. [ Gr. &unr_; power + -graph. See Dynamic. ] (Physiol.) A dynamometer to which is attached a device for automatically registering muscular power. [ 1913 Webster ]

n. [ Cf. F. dynamomètre. See Dynameter. ] An apparatus for measuring force or power; especially, muscular effort of men or animals, or the power developed by a motor, or that required to operate machinery. [ 1913 Webster ]

☞ It usually embodies a spring to be compressed or weight to be sustained by the force applied, combined with an index, or automatic recorder, to show the work performed.

{ } a. Relating to a dynamometer, or to the measurement of force doing work; as, dynamometrical instruments. [ 1913 Webster ]