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English Lexicon

Extensional

/ɪkˈstɛn.ʃən.əl/
adjectiveCEFR C2 (Proficient)Top #14500 frequency
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Comprehensive Definitions & Senses

2 senses
As adjective
  1. 1

    Concerned with or consisting of the actual members or instances of a set, class, or concept, rather than its defining properties or attributes.

    "The database was organized using an extensional approach by listing every individual record."
  2. 2

    In logic and semantics, relating to the extension of a term, meaning the set of things to which the term applies.

    "An extensional definition specifies the meaning of a term by pointing to all the objects that fall under it."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from Medieval Latin 'extensionalis', stemming from Latin 'extensio' (a stretching out), based on the past participle of 'extendere'. It entered philosophical and logical discourse in the 19th and 20th centuries to describe properties determined by the set of things to which they apply rather than their intrinsic intension.

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