Definition of pegmatite
: a coarse variety of granite occurring in dikes or veins
pegmatiticplay \ˌpeg-mə-ˈti-tik\ adjective
Learn More about pegmatite
Britannica.com: Encyclopedia article about pegmatite
Seen and Heard
What made you want to look up pegmatite? Please tell us where you read or heard it (including the quote, if possible).