| 释义 |
gneiss
\ˈnīs\ noun
(-es)
Etymology: German gneis, probably alteration of Middle High German gneiste, ganeiste spark, from Old High German gneisto; akin to Old English gnāst spark, Old Norse gneisti
: a laminated or foliated metamorphic rock corresponding in composition to granite or some other feldspathic plutonic rock and often named for a conspicuous mineral constituent
< biotite gneiss >
< hornblendic gneiss >
or for the plutonic or sedimentary rock of origin
< syenitic gneiss >
< conglomerate gneiss >
— see orthogneiss, paragneiss
• gneiss·ic \-sik\ adjective
• gneiss·ose \-ˌsōs\ adjective |