# felsite

> English word · Noun

## Definitions
1. A fine grained volcanic extrusive rock, generally light in color, composed of felsic minerals.
2. Any light-colored volcanic rock whose true mineralogy is not yet determined.

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