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  • ism
    ism
    noun
    a distinctive doctrine, theory, system, or practice.
  • -ism
    -ism
    a suffix appearing in loanwords from Greek, where it was used to form action nouns from verbs (baptism ); on this model, used as a productive suffix in the formation of nouns denoting action or practice, state or condition, principles, doctrines, a usage or characteristic, devotion or adherence, etc. (criticism; barbarism; Darwinism; despotism; plagiarism; realism; witticism; intellectualism ).
  • ISM
    ISM
    abbreviation
    interstellar medium
Synonyms

ism

1 American  
[iz-uhm] / ˈɪz əm /

noun

  1. a distinctive doctrine, theory, system, or practice.

    This is the age of isms.


-ism 2 American  
  1. a suffix appearing in loanwords from Greek, where it was used to form action nouns from verbs (baptism ); on this model, used as a productive suffix in the formation of nouns denoting action or practice, state or condition, principles, doctrines, a usage or characteristic, devotion or adherence, etc. (criticism; barbarism; Darwinism; despotism; plagiarism; realism; witticism; intellectualism ).


-ism 1 British  

suffix

  1. indicating an action, process, or result

    criticism

    terrorism

  2. indicating a state or condition

    paganism

  3. indicating a doctrine, system, or body of principles and practices

    Leninism

    spiritualism

  4. indicating behaviour or a characteristic quality

    heroism

  5. indicating a characteristic usage, esp of a language

    colloquialism

    Scotticism

  6. indicating prejudice on the basis specified

    sexism

    ageism

"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

ISM 2 British  

abbreviation

  1. interstellar medium

"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

ism 3 British  
/ ˈɪzəm /

noun

  1. informal an unspecified doctrine, system, or practice

"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

Etymology

Origin of ism1

Extracted from words with the suffix -ism

Origin of -ism2

From Greek -ismos, -isma noun suffixes, often directly, often through Latin -ismus, -isma, sometimes through French -isme, German -ismus (all ultimately from Greek )

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:

“What you worry about ism this is two hours a day, right?”

From Seattle Times Jun. 8, 2020

Careerism is futile, yet somehow it is the only ism standing.

From The Guardian Apr. 23, 2020

But even though this is abstract photography decades before it became an ism in art, his work is seen as scientific.

From Slate Sep. 13, 2016

Because for all our talk of colorblindness, we don't really want to dispense with the idea of race so much as we want to lose the "ism."

From Los Angeles Times Sep. 24, 2014

Long, unfamiliar words ending in tion, ism, and actic, with more talk about “the people” thrown in for good measure, like Big Ma throwing a pinch of salt into the cake batter.

From "One Crazy Summer" by Rita Williams-Garcia

The limited-edition zine, printed by -ism, will be at Halsey’s booth at Frieze L.A.

From Los Angeles Times Feb. 19, 2025

It doesn’t seem like one -ism or -ation is entirely to blame, like globalism or immigration, capitalism or inflation.

From Slate Oct. 12, 2024

This was, after all, the peak of "No Reservations" style "Yes, Chef" -ism, when cooking was supposed to be sexy and aggressive and a little bit dangerous.

From Salon Aug. 19, 2024

"We have one more -ism in our history: Stalinism," says Andrei Kolesnikov, senior fellow at the Carnegie Eurasia Russia Centre.

From BBC May 6, 2024

Byronism was exactly the -ism with which she could execute the wildest feats of half-voluntary and half-involuntary acrobatics, saltimbanquery, and chucking of her bonnet over all conceivable and inconceivable mills.

From A History of the French Novel, Vol. 2 To the Close of the 19th Century by Saintsbury, George

Eastern, followed by ISM services for June at 10 a.m.

From MarketWatch Jul. 6, 2026

Monday’s ISM report on services sector activity in June could also attract heightened interest as investors look to see whether the U.S. economy is continuing to display signs of strength.

From The Wall Street Journal Jul. 3, 2026

A closely followed ISM gauge of manufacturers dipped to 53.3% in June from 54% in the prior month, but it was still relatively robust.

From MarketWatch Jul. 1, 2026

“This is the definition of inflationary pressure starting to affect us,” a senior restaurant-industry executive told ISM.

From MarketWatch Jun. 3, 2026

The Termination ISM is always us'd but as one Syllable; as Where griesly Schism and raging Strife appear.Cowl.

From The Art of English Poetry (1708) by Bysshe, Edward

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