megacryst
/ˈmɛɡəkrɪst/Geology
noun
In an igneous or metamorphic rock: a crystal that is significantly larger than those in the surrounding groundmass or matrix.
Origin
1950s. From mega- + cryst-, after phenocryst, metacryst.
- massasauga
- Massasoit
- Massawa
- mass balance
- mass-balancing
- mass bell
- mass book
- mass burn
- mass burning
- Mass card
- mass communication
- mass concrete
- mass consumption
- mass convention
- mass copper
- masscult
- mass customization
- mass-customize
- mass defect
- mass diagram
- mass distribution
- mass driver
- massecuite
- massed entry
- massed estate