extensional

E1X8T1E1N1S1I1O1N1A1L1

adjective

Of or pertaining to extension.

UncommonScrabble 18

Meanings

adjectiveextensional (not comparable)
  1. not comparableOf or pertaining to extension.
    1 more example

    In both the intensional and extensional logic traditions, we see theories of complex terms. In the extensional tradition, disjunctive and conjunctive terms are interpreted by taking the union and intersection of classes. The conjunctive term AB is interpreted as the intersection of the class A and the class B and the extension of the disjunctive term A+B is understood as the union of the extensions of A and B. In the intensional tradition, the reverse holds. The term AB is interpreted as the union of the properties in the intent of A and the intent of B and A+B is interpreted as the intersection of the properties in A and B. This reversal makes sense, since more things fit a smaller number of properties and fewer things fit a larger number of properties.

    2011 July 20, Edwin Mares, “Propositional Functions”, in The Stanford Encyclopedia of Philosophy, retrieved 15 Jul 2012
  2. not comparableHaving great extent.

Synonyms & antonyms

adjectivedefining a word by listing the class of entities to which the word correctly applies

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Englishextension
  2. Proto-Indo-European*h₂el-
  3. Proto-Indo-European*h₂élisder.?
  4. Englishextensional

From extension + -al.

Full word history & related roots →

Translations

Polish ekstensjonalny, rozszerzalny
  • ekstensjonalnyTranslations
  • rozszerzalnyTranslations
  • rozciągliwyTranslations
Spanish extensional
  • extensionalTranslations
Cite this entry
APA

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

MLA

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

Chicago

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

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