Shortened rule term
AC
AC means Armor Class. Use AC as the target number an attack roll must meet or beat to hit a creature or object.
Meaning
AC means Armor Class.
AC is short for Armor Class.
Use At The Table
Use AC as the target number an attack roll must meet or beat to hit a creature or object.
Limits
- AC is not rolled by the defender.
- Armor, shields, Dexterity, spells, cover, and features can change AC.
- Saving throws do not target AC unless a specific rule says otherwise.
FAQ
What is AC in D&D?
AC is a rules reference that explains one part of character creation, exploration, combat, or spellcasting.
Read more: AC 
D&D Portal - AC Shortened rule term AC means Armor Class. Use AC as the target number an attack roll must meet or beat to hit a creature or object. Full link: https://dnd-portal.com/rules/abbreviations/ac/
How does AC work?
The AC page explains the rule, its requirements, and the result during play.
Read more: AC D&D Portal - AC Shortened rule term AC means Armor Class. Use AC as the target number an attack roll must meet or beat to hit a creature or object. Full link: https://dnd-portal.com/rules/abbreviations/ac/
How do you use AC during play?
Use the AC rules when the situation described on the page occurs during a game.
Read more: AC D&D Portal - AC Shortened rule term AC means Armor Class. Use AC as the target number an attack roll must meet or beat to hit a creature or object. Full link: https://dnd-portal.com/rules/abbreviations/ac/