dynamic
Pronunciation: /dʌɪˈnamɪk/
adjective
- 1(of a process or system) characterized by constant change, activity, or progress: a dynamic economy
- Physics relating to forces producing motion. Often contrasted with static.
- Linguistics (of a verb) expressing an action, activity, event, or process. Contrasted with stative.
- denoting or relating to web pages that update frequently or are generated according to an individual’s search terms: the dynamic content of these sites keeps their audience informed and up to date
- 2(of a person) positive in attitude and full of energy and new ideas: a dynamic young advertising executive
noun
- 1a force that stimulates change or progress within a system or process: evaluation is part of the basic dynamic of the project
- 2 Musicanother term for dynamics (sense 3).

Origin:
early 19th century (as a term in physics): from French dynamique, from Greek dunamikos, from dunamis 'power'