[ dahy-nam-iks ]
/ daɪˈnæm ɪks /


(used with a singular verb) Physics. the branch of mechanics that deals with the motion and equilibrium of systems under the action of forces, usually from outside the system.
(used with a plural verb) the motivating or driving forces, physical or moral, in any field.
(used with a plural verb) the pattern or history of growth, change, and development in any field.
(used with a plural verb) variation and gradation in the volume of musical sound.
(used with a singular verb) psychodynamics.

Origin of dynamics

First recorded in 1780–90; see origin at dynamic, -ics

Definition for dynamics (2 of 2)

[ dahy-nam-ik ]
/ daɪˈnæm ɪk /

adjective Also dy·nam·i·cal.


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

Origin of dynamic

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


Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for dynamics

British Dictionary definitions for dynamics (1 of 2)

/ (daɪˈnæmɪks) /


(functioning as singular) the branch of mechanics concerned with the forces that change or produce the motions of bodiesCompare statics, kinematics
(functioning as singular) the branch of mechanics that includes statics and kineticsSee statics, kinetics
(functioning as singular) the branch of any science concerned with forces
those forces that produce change in any field or system
  1. the various degrees of loudness called for in performance
  2. Also called: dynamic marks, dynamic markings directions and symbols used to indicate degrees of loudness

British Dictionary definitions for dynamics (2 of 2)

/ (daɪˈnæmɪk) /


of or concerned with energy or forces that produce motion, as opposed to static
of or concerned with dynamics
Also: dynamical characterized by force of personality, ambition, energy, new ideas, etc
music of, relating to, or indicating dynamicsdynamic marks
computing (of a memory) needing its contents refreshed periodicallyCompare static (def. 8)

Derived forms of dynamic

dynamically, adverb

Word Origin for dynamic

C19: from French dynamique, from Greek dunamikos powerful, from dunamis power, from dunasthai to be able
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for dynamics

[ dī-nămĭks ]


The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for dynamics (1 of 2)

[ dī-nămĭks ]

The branch of physics that deals with the effects of forces on the motions of bodies. Also called kinetics Compare kinematics.

Scientific definitions for dynamics (2 of 2)

[ dī-nămĭk ]

Relating to energy or to objects in motion. Compare static.
Relating to the study of dynamics.
Characterized by continuous change or activity.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.