# porphyroid

> English word · Noun

## Definitions
1. A crystalline and schistose rock containing porphyritic crystals of feldspar.

## Etymology
From porphyry + -oid.

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