# petromastoid

> English word · Adjective

## Definitions
1. Of or relating to the petrous and mastoid parts of the temporal bone

## Etymology
From petro- + mastoid.

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