gneiss
/naɪs/noun
mass noun
- a metamorphic rock with a banded or foliated structure, typically coarse-grained and consisting mainly of feldspar, quartz, and mica片麻岩。
派生词
gneissic
adjectivegneissose
adjective词源
mid 18th cent.: from German, from Old High German gneisto 'spark' （because of the rock's sheen）.