mechanism

American  

[mek-uh-niz-uhm] / ˈmɛk əˌnɪz əm /

noun

mechanisms plural

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

---

Other Word Forms

Derived Forms

• antimechanism
  noun
• mechanismic
  adjective

Inflected Forms

Nouns

• mechanisms
  plural

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

Explanation

Use the word mechanism to describe a process that has been set up to accomplish a particular goal. If you’ve set up a method for dealing with your sister when she annoys you, then you have a mechanism in place for establishing peace with your sister. The word mechanism came into the English language in the seventeenth century by way of the Latin word mechanismus, which traces back to the Greek word mekhane, meaning “device" or "means.” Mechanism still carries with it the meaning of “device” and can be used to describe a machine, but nowadays you are more likely to hear it used to describe a process for getting something done, such as "a mechanism for generating revenue" or "a crisis-resolution mechanism."

Example Sentences

See Examples For:

mechanism mechanisms

The tech-heavy Kospi has been halted eight times so far this year under a stock market mechanism known as a circuit breaker, which is designed to calm panic selling.

From BBC ● Jul. 28, 2026

“This one lived for itself, developing an economic mechanism based on human enslavement, which allowed it to become self-sustaining.”

From The Wall Street Journal ● Jul. 27, 2026

France has invoked the European Union's civil protection mechanism to ask for help, President Emmanuel Macron said, warning the crisis remained "very intense."

From Barron's ● Jul. 24, 2026

He said France had activated the European Union's civil protection mechanism and will receive reinforcements, including two Black Hawk helicopters from the Czech Republic and Slovakia.

From BBC ● Jul. 24, 2026

Some of the mortar safety pins, which kept the priming mechanism from allowing the round to detonate on impact, had not been replaced.

From "Boots on the Ground: America's War in Vietnam" by Elizabeth Partridge

“I want to understand the mechanisms behind the brain biomarkers to see why it’s happening,” Shapses said.

From MarketWatch ● Jul. 27, 2026

Tehran says it has held talks in recent days with Oman, which also borders the strait, on "common principles and operational mechanisms" to ensure the safe passage of shipping.

From Barron's ● Jul. 27, 2026

The findings highlight the need to study the protective mechanisms that may help some people maintain unusually strong cognitive abilities.

From Science Daily ● Jul. 25, 2026

"As the accessibility of these medications continues to rise and patient uptake increases, it's crucial that we understand the neural mechanisms underlying the effects we're seeing," said Lorenzo Leggio, M.D.,

From Science Daily ● Jul. 25, 2026

We are really not all that good at preventing disease or preserving health—not yet anyway— and we are not likely to be until we have learned a great deal about disease mechanisms.

From "The Lives of a Cell" by Lewis Thomas

Related Words

• agency
• operation
• procedure
• process
• system
• technique