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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:

Maybe national media outlets are cautious about deploying this ism, lest they be branded extreme, or lose audience.

From Los Angeles Times ● Mar. 8, 2023

“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

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

"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

Lemon's -ism appears have taproots into the frontal cortex of his cerebrum, entangled in a way that may be impossible for any amount of "formal training" to overcome.

From Salon ● Feb. 24, 2023

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 George Saintsbury

The ISM data on services activity in September is due on Monday, followed by August trade data on Tuesday, weekly jobless claims Thursday and the University of Michigan’s preliminary October sentiment survey on Friday.

From The Wall Street Journal ● Oct. 2, 2026

September ISM manufacturing data, while Federal Reserve Vice Chair Philip Jefferson is one of a clutch of Fed speakers.

From The Wall Street Journal ● Oct. 1, 2026

The ISM purchasing managers index fell to 54.6 in August from 55.6 in July, missing the 55.3 reading expected by analysts.

From The Wall Street Journal ● Sep. 1, 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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