{ , a. } 1. (Biol.) Of or pertaining to biodynamics, or the doctrine of vital forces or energy. [ Webster 1913 Suppl. ]

2. of or pertaining to a method of farming that uses only organic fertilizers (rather than chemical fertilizers) and organic materials for improving the soil characteristics. [ PJC ]

{ } a. [ Gr. &unr_; powerful, fr. &unr_; power, fr. &unr_; 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. [ 1913 Webster ]

Science, as well as history, has its past to show, -- a past indeed, much larger; but its immensity is dynamic, not divine. J. Martineau. [ 1913 Webster ]

The vowel is produced by phonetic, not by dynamic, causes. J. Peile. [ 1913 Webster ]

2. Relating to physical forces, effects, or laws; as, dynamical geology. [ 1913 Webster ]

As natural science has become more dynamic, so has history. Prof. Shedd. [ 1913 Webster ]

Dynamical electricity. See under Electricity. [ 1913 Webster ]

WordNet lists a number of narrower terms for dynamic and adj. [ Narrower terms: can-do; driving; energizing, energising, kinetic; forceful, slashing, vigorous; projectile; propellant, propellent, propelling, propulsive; renascent, resurgent; self-propelled, self-propelling; high-octane, high-powered, high-power, high-voltage ] [ WordNet 1.5 ]

adv. In accordance with the principles of dynamics or moving forces. J. Peile. [ 1913 Webster ]

{ } a. (Physics) Pertaining to the movements or force of electric or galvanic currents; dependent on electric force. [ 1913 Webster ]

{ } a. [ Hydro-, 1 + dynamic, -ical: cf. F. hydrodynamique. ] Pertaining to, or derived from, the dynamical action of water of a liquid; of or pertaining to water power. [ 1913 Webster ]

Hydrodynamic friction, friction produced by the viscosity of a liquid in motion. [ 1913 Webster ]