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⇱ MECHANISM Definition & Meaning | Dictionary.com


mechanism

American  
[mek-uh-niz-uhm] / ˈmɛk əˌnɪz əm /

noun

  1. an assembly of moving parts performing a complete functional motion, often being part of a large machine; linkage.

  2. the agency or means by which an effect is produced or a purpose is accomplished.

  3. machinery or mechanical appliances in general.

  4. the structure or arrangement of parts of a machine or similar device, or of anything analogous.

  5. the mechanical part of something; any mechanical device.

    the mechanism of a clock.

  6. routine methods or procedures; mechanics.

    the mechanism of government.

  7. mechanical execution, as in painting or music; technique.

  8. the theory that everything in the universe is produced by matter in motion; materialism.

  9. Philosophy.

    1. the view that all natural processes are explicable in terms of classical mechanics.

    2. the view that all biological processes may be described in physicochemical terms.

  10. Psychoanalysis. the habitual operation and interaction of psychological forces within an individual that assist in interpreting or dealing with the physical or psychological environment.


mechanism British  
/ ˈmɛkəˌnɪzəm /

noun

  1. a system or structure of moving parts that performs some function, esp in a machine

  2. something resembling a machine in the arrangement and working of its parts

    the mechanism of the ear

  3. any form of mechanical device or any part of such a device

  4. a process or technique, esp of execution

    the mechanism of novel writing

  5. philosophy

    1. the doctrine that human action can be explained in purely physical terms, whether mechanical or biological

    2. the explanation of phenomena in causal rather than teleological or essentialist terms

    3. the view that the task of science is to seek such explanations

    4. strict determinism Compare dynamism vitalism

  6. psychoanal

    1. the ways in which psychological forces interact and operate

    2. a structure having an influence on the behaviour of a person, such as a defence mechanism

"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

Other Word Forms

  • antimechanism noun
  • mechanismic adjective

Etymology

Origin of mechanism

First recorded in 1655–65; from New Latin mēchanismus; Late Latin mēchanisma “contrivance,” from Greek mēchan(ḗ) machine + New Latin -ismus, Late Latin -isma -ism

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"I think this is a pretty common coping mechanism for a lot of people" to return to shows they enjoyed in their youth, Kaur said.

From Barron's • Apr. 8, 2026

Chinese authorities said Tuesday that under the country’s biweekly pricing mechanism, gasoline and diesel prices should have risen by 800 yuan and 770 yuan a ton, respectively.

From The Wall Street Journal • Apr. 7, 2026

The researchers confirmed this mechanism using advanced electron microscopy, spectroscopy, and quantum-level simulations.

From Science Daily • Apr. 7, 2026

“Secure ballot envelope identifiers provide a reliable, auditable mechanism to enforce Federal law without unduly burdening or infringing on the rights of eligible voters,” the order reads.

From Los Angeles Times • Mar. 31, 2026

Going over to his sheep, Rick bent down, searching in the thick white wool—the fleece at least was genuine—until he found what he was looking for: the concealed control panel of the mechanism.

From "Do Androids Dream of Electric Sheep?" by Philip K. Dick

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.