dynamic

UK: /daɪˈnæmɪk/ US: /daɪˈnæmɪk/ ,(dī nam′ik)

WordReference Random House Learner's Dictionary of American English © 2026

dy•nam•ic /daɪˈnæmɪk/   adj. Also, dyˈnam•i•cal. 

1. vigorously active or forceful;
   energetic:
   a dynamic person.
2. characterized by or producing change or progress:
   It's a dynamic process, not a static one.
3. Physics of or relating to force, power, or motion.
4. Physics of or relating to the science of dynamics.

dy•nam•i•cal•ly, adv. See -dyn-.

WordReference Random House Unabridged Dictionary of American English © 2026

dy•nam•ic  (dī nam′ik), adj. Also, dy•nam′i•cal. 

1. pertaining to or characterized by energy or effective action;
   vigorously active or forceful;
   energetic:
   the dynamic president of the firm..
2. Physics
   • of or pertaining to force or power.
   • of or pertaining to force related to motion.
3. Physics pertaining to the science of dynamics.
4. Music and Dance of or pertaining to the range of volume of musical sound.
5. Computing (of data storage, processing, or programming) affected by the passage of time or the presence or absence of power:
   Dynamic memory must be constantly refreshed to avoid losing data.
6. Grammar nonstative.

n. 

7. a basic or dynamic force, esp. one that motivates, affects development or stability, etc.

• Greek dynamikós, equivalent. to dýnam(is) force, power + -ikos -ic
• French dynamique
• 1810–20

dy•nam′i•cal•ly, adv. 

Collins Concise English Dictionary © HarperCollins Publishers::

dynamic / daɪˈnæmɪk/ adjective

1. of or concerned with energy or forces that produce motion, as opposed to static
2. of or concerned with dynamics
3. Also: dynamical characterized by force of personality, ambition, energy, new ideas, etc
4. (of a memory) needing its contents refreshed periodically
   Compare static8

Etymology: 19th Century: from French dynamique, from Greek dunamikos powerful, from dunamis power, from dunasthai to be able

dyˈnamically adverb