Definition of migmatite
: a gneiss produced by the injection of igneous material between the laminae of a schistose formation —called also injection gneiss
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of migmatite
Late Latin migmat-, migma mixture (from Greek, from meignynai, mignynai to mix) + English -ite
Seen and Heard
What made you want to look up migmatite? Please tell us where you read or heard it (including the quote, if possible).