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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

We said, of course, yes, and brought the local publisher -ism into the mix to print the limited-edition zines that will be distributed at Halsey’s Frieze booth this week.

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

Stated in the abstract, it would have been a mere blank -ism; developed in its intimate relations with Teufelsdröckh’s character and career, it is filled with the hot life-blood of natural thought and feeling.

From Sartor Resartus, and On Heroes, Hero-Worship, and the Heroic in History by Thomas Carlyle

ISM factory index ticks down in August as price pressure continues to build.

From The Wall Street Journal Sep. 2, 2026

The headline ISM gauge of manufacturers sentiment, released Tuesday, dropped to 54.6% in August, from 55.6% in the prior month.

From MarketWatch Sep. 1, 2026

The ISM reported that 20% of the manufacturing GDP last month had an index reading that signaled contraction, up from 5% in June.

From The Wall Street Journal Aug. 15, 2026

The ISM survey is one of the earliest indicators each month of the health of the economy.

From MarketWatch Aug. 5, 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 Edward Bysshe

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