Word.ws English Dictionary

extensionalities

extensionalities is the plural of extensionality.

Meaning of extensionality

Noun

extensionality (usually uncountable, plural extensionalities)

  1. (usually) The principle that objects are equal if and only if their observed properties are the same, regardless of internal processes that lead to those properties.
  2. (usually, functional analysis) The principle that functions are equal if and only if they operate on the same domain and for any given element of the domain the result of each of the functions is the same.
  3. (usually) The principle, codified in the axiom of extensionality, that sets are equal if and only if they contain the same elements.

Questions about extensionalities

What is extensionalities the plural of?
Extensionalities is the plural of extensionality.

Words near extensionalities in the dictionary

  1. extensional definitions
  2. extensionalism
  3. extensionalisms
  4. extensionalist
  5. extensionalists
  6. extensionalities
  7. extensionality
  8. extensionally
  9. extensionist
  10. extensionists
  11. extensionless

Source and license

Adapted from Wiktionary: extensionalities (page history and authors); extensionality (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “extensionalities.” Word.ws, https://word.ws/extensionalities. Based on Wiktionary, CC BY-SA 4.0.