---
tag: HTKPQY7A3V
kind: concept
name: Necessity
sources:
  - wikipedia: en:76765067@r1368301704
    locator: Glossary of logic, section N
    note: adopted
    mention: wikipedia://en/76765067#6QLN
    sections: [Summary]
inventory: [VP6PV954D9]
---

## Summary

A modal quality indicating that a proposition is true in all possible worlds or under all possible circumstances.