(of a process or system) characterized by constant change, activity, or progress

a dynamic economy

(of a person) positive in attitude and full of energy and new ideas

a dynamic young advertising executive

relating to the volume of sound produced by an instrument, voice, or recording

(of a memory device) needing to be refreshed by the periodic application of a voltage

a force that stimulates change or progress within a system or process

evaluation is part of the basic dynamic of the project