# megacryst

> English word · Noun

## Definitions
1. Any crystalline grain in an igneous or metamorphic rock that is much larger than those of the surrounding matrix

## Etymology
mega- + -cryst

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