mechanism
Americannoun
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an assembly of moving parts performing a complete functional motion, often being part of a large machine; linkage.
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the agency or means by which an effect is produced or a purpose is accomplished.
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machinery or mechanical appliances in general.
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the structure or arrangement of parts of a machine or similar device, or of anything analogous.
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the mechanical part of something; any mechanical device.
the mechanism of a clock.
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routine methods or procedures; mechanics.
the mechanism of government.
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mechanical execution, as in painting or music; technique.
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the theory that everything in the universe is produced by matter in motion; materialism.
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Philosophy.
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the view that all natural processes are explicable in terms of classical mechanics.
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the view that all biological processes may be described in physicochemical terms.
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Psychoanalysis. the habitual operation and interaction of psychological forces within an individual that assist in interpreting or dealing with the physical or psychological environment.
noun
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a system or structure of moving parts that performs some function, esp in a machine
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something resembling a machine in the arrangement and working of its parts
the mechanism of the ear
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any form of mechanical device or any part of such a device
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a process or technique, esp of execution
the mechanism of novel writing
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philosophy
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the doctrine that human action can be explained in purely physical terms, whether mechanical or biological
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the explanation of phenomena in causal rather than teleological or essentialist terms
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the view that the task of science is to seek such explanations
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psychoanal
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the ways in which psychological forces interact and operate
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a structure having an influence on the behaviour of a person, such as a defence mechanism
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Other Word Forms
Derived Forms
Inflected Forms
Nouns
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."
Vocabulary lists containing mechanism
Power Suffix: -ism
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Engineering - Introductory
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The Suffix -ism, Part 1
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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.
See Examples For:
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
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
It works through a newly identified mechanism, which has led the researchers to suggest that it may also carry a lower risk of side effects.
From Science Daily ● Jul. 21, 2026
As a coping mechanism later on, her daughter, now 10 years old, would ask the teacher for permission to take bathroom breaks, time she would then use to take a walk through the hallways.
From The Wall Street Journal ● Jul. 20, 2026
He doesn’t hear me over the screeching of the rusted mechanism.
From "Linked" by Gordon Korman
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“I want to understand the mechanisms behind the brain biomarkers to see why it’s happening,” Shapses said.
From MarketWatch ● Jul. 27, 2026
The discussions focused on "common principles and operational mechanisms" for ensuring the safe passage of shipping through the strait while respecting the sovereign rights of the two states, Iran's foreign ministry spokesman Esmaeil Baqaei said.
From Barron's ● Jul. 27, 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
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
Other animals are similarly endowed with signaling mechanisms.
From "The Lives of a Cell" by Lewis Thomas
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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.