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[dahy-nam-ik] /daɪˈnæm ɪk/
adjective, Also, dynamical
pertaining to or characterized by energy or effective action; vigorously active or forceful; energetic:
the dynamic president of the firm.
  1. of or relating to force or power.
  2. of or relating to force related to motion.
pertaining to the science of dynamics.
of or relating to the range of volume of musical sound.
Computers. (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.
Dynamic websites contain Web pages that are generated in real time.
Grammar. nonstative.
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
Related forms
dynamically, adverb
nondynamic, adjective
nondynamical, adjective
nondynamically, adverb
undynamic, adjective
undynamically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for dynamical
Historical Examples
  • In the domain of style, Euphues was dynamical; the plays were not.

    John Lyly John Dover Wilson
  • A dynamical theory is recognised as being at once necessary and sufficient.

    The Ether of Space Oliver Lodge
  • So, too, is it if we look at the development of dynamical astronomy.

    The Data of Ethics

    Herbert Spencer
  • The nature of the dynamical action may be thus briefly explained.

  • It increases the wonder with which we regard every dynamical discovery.

    The Gospel of St. John Frederick Denison Maurice
  • This was the root idea of his attempt to find the dynamical equivalent of heat.

    Lord Kelvin Andrew Gray
  • It is a statical manifestation of valor, as daring deeds are a dynamical.

  • This was the first determination of the dynamical equivalent of heat.

  • He had no idea of framing a solar system on a dynamical basis.

    History of Astronomy George Forbes
  • dynamical instability corresponds with the maximum of energy, and dynamical stability to the minimum of energy.

    Time and Tide

    Robert S. (Robert Stawell) Ball
British Dictionary definitions for dynamical


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 dynamics: dynamic marks
(computing) (of a memory) needing its contents refreshed periodically Compare static (sense 8)
Derived Forms
dynamically, adverb
Word Origin
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
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Word Origin and History for dynamical



1817 as a term in philosophy; 1827 in the sense "pertaining to force producing motion" (the opposite of static), from French dynamique introduced by German mathematician Gottfried Leibnitz (1646-1716) in 1691 from Greek dynamikos "powerful," from dynamis "power," from dynasthai "to be able, to have power, be strong enough," of unknown origin. The figurative sense of "active, potent, energetic" is from 1856 (in Emerson). Related: Dynamically.



"energetic force; motive force," 1894, from dynamic (adj.).

Online Etymology Dictionary, © 2010 Douglas Harper
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dynamical in Science
  1. Relating to energy or to objects in motion. Compare static.

  2. Relating to the study of dynamics.

  3. Characterized by continuous change or activity.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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