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.
- trophotropism
- trophozoite
- trophozooid
- trophus
- trophy
- -trophy
- trophy badge
- trophy bearer
- trophy child
- trophy decoration
- trophy flag
- trophy hunter
- trophy hunting
- trophyless
- trophy lock
- trophy money
- trophy race
- trophy tax
- trophy wife
- tropic
- -tropic
- tropic acid
- tropical
- tropical cyclone
- tropical depression