# periodontitis

> English word · Noun · frequency rank #74,389

## Definitions
1. A serious form or stage of periodontal disease which may lead to loss of bone and falling out of teeth.

## Etymology
From Ancient Greek περί (perí, “around”) + ὀδούς (odoús, “a tooth”) + -itis.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/periodontitis