# rhyolite

> English word · Noun · IPA /ˈɹaɪ.əˌlaɪt/ · frequency rank #79,918

## Definitions
1. An igneous, volcanic (extrusive) rock, of felsic composition, with aphanitic to porphyritic texture.

## Etymology
Coined by Ferdinand von Richthofen as German Rhyolith, from Ancient Greek ῥέω (rhéō, “flow”) + λίθος (líthos, “stone”) (modified to + -lite).

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