{ Dy*nam"ic (?), Dy*nam"ic*al (?), } a. [Gr. &?; powerful, fr. &?; power, fr. &?; to be able; cf. L. durus hard, E. dure: cf. F. dynamique.] 1. Of or pertaining to dynamics; belonging to energy or power; characterized by energy or production of force.

Science, as well as history, has its past to show, -- a past indeed, much larger; but its immensity is dynamic, not divine.

J. Martineau.

The vowel is produced by phonetic, not by dynamic, causes.

J. Peile.

2. Relating to physical forces, effects, or laws; as, dynamical geology.

As natural science has become more dynamic, so has history.

Prof. Shedd.

Dynamical electricity. See under Electricity.