Word.ws English Dictionary

proper classes

proper classes is the plural of proper class.

Meaning of proper class

Noun

proper class (plural proper classes)

  1. A class which is not a set.
    • Thus, what is required is not that all proper classes be the size of the class of all sets, but that every proper class has at least as many members in #92;Omega#95;p as there are sets in #92;Omega#95;2, whatever is in #92;Omega#95;2.1994, Shaughan Lavine, Understanding the Infinite, Harvard University Press, page 322

Questions about proper classes

What is proper classes the plural of?
Proper classes is the plural of proper class.

Words near proper classes in the dictionary

  1. proper adjective
  2. proper adjectives
  3. proper article
  4. proper articles
  5. proper class
  6. proper classes
  7. proper divisor
  8. proper divisors
  9. proper fraction
  10. proper fractions
  11. proper inclusion

Source and license

Adapted from Wiktionary: proper classes (page history and authors); proper class (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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