iso

I1S1O1
UK/ˈaɪsəʊ/US/ˈaɪsoʊ/UK/ˈaɪ.səʊ/UK/ˈaɪ.ɛsˌəʊ/

noun

Quarantine measures in order to mitigate the spread of communicable diseases, such as Covid-19.

CommonScrabble 3

Meanings

iso1

nouniso (countable and uncountable, plural isos)

plural isos

  1. Clipping of isolation.
    1. colloquialcountableuncountableQuarantine measures in order to mitigate the spread of communicable diseases, such as Covid-19.
    2. colloquialcountableuncountableAmerican footballAn isolation play in basketball or American football.

      “I can remember lining up against them and saying, ‘This is the 15th iso that you’re going to get.’ ”

      2007 January 5, Pete Thamel, quoting Greg Mattison, “Scoreboard Shows This Isn't the Same Old Ohio State”, in New York Times
  2. abbreviationclippingcountableuncountablecategory theoryClipping of isomorphism.

iso2

preposition
  1. abbreviationinitialismInitialism of in search of.

ISO3

proper noun
  1. organisationThe International Organization for Standardization.

    Sutton SignWriting is the universal and complete solution for written sign language, ISO 15924 script code "Sgnw".

    2022 January 30, Steve Slevinski, “Formal SignWriting”, in IETF, archived from the original on 30 Apr 2024
    1 more example

    After the ISO decision was first reported by Reuters on Friday, a number of gun-control activists and politicians called for payment companies to adopt the new codes.

    2022 September 9, Ross Kerber, “Global standards body approves new merchant code for gun sellers”, in Reuters, archived from the original on 17 Sep 2022
nounISO (plural ISOs)

plural ISOs

  1. file formatA disk image of an ISO 9660 file system (such as a CD or DVD).

    I downloaded the ISO but got an error when trying to burn it to disc.

  2. artsA measure of film sensitivity or brightness, derived from the ISO standard.

ISO4

nounISO (plural ISOs)

plural ISOs

  1. abbreviationinitialismInitialism of Imperial Service Order.
  2. abbreviationinitialismbusinessInitialism of incentive stock option.
  3. abbreviationderogatoryinitialismentertainmentInitialism of instrument-shaped object.
  4. abbreviationinitialismInitialism of information security officer.
preposition
  1. abbreviationinitialismInitialism of in search of.

    SO's affection for cats is important, but not nearly as important as not being allergic! It's really irritating to date a person who stops breathing whenever he's in your apartment. "GWM, 26, ISO G/BiM, must be kind to animals and have no allergies to pets..."

    1992 November 23, Joseph E. Beason, “Re: gayfolk and cats”, in soc.motss (Usenet)

Synonyms & antonyms

Also see

Origin

  1. Greekίσος“equal”
  2. EnglishISO

Officially from Greek ίσος (ísos, “equal”). However, a participant in the initial meetings disputes this etymology, claiming that the link to ίσος was decided on after the name ISO was set. (file format): From the file extension, in reference to the ISO 9660 specification.

Full word history & related roots →

Rhymes & wordplay

Sounds the same

Anagrams

Cite this entry
APA

iso. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/iso

MLA

“iso.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/iso. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “iso,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/iso.

Source: iso on Wiktionary, CC BY-SA 4.0.