---
tag: SWZA2P25BF
kind: concept
name: Anti-extension
sources:
  - wikipedia: en:76765067@r1368301704
    locator: Glossary of logic, section A
    note: adopted
    mention: wikipedia://en/76765067#CIU5
    sections: [Summary]
inventory: [R49MSVN0GB]
---

## Summary

In set theory and logic, the complement of the extension of a concept or predicate, consisting of all objects that do not fall under the concept.