Definition:
- (n.) A crystalline rock, consisting, like granite, of quartz, feldspar, and mica, but having these materials, especially the mica, arranged in planes, so that it breaks rather easily into coarse slabs or flags. Hornblende sometimes takes the place of the mica, and it is then called hornblendic / syenitic gneiss. Similar varieties of related rocks are also called gneiss.
Compare gneiss with other words:
gneiss vs. gneissoid
gneiss vs. gneissic
gneiss vs. gneissose
gneiss vs. schist
gneiss vs. granite
gneiss vs. marble
gneiss vs. vein
band vs. gneiss
gneiss vs. pun
gneiss vs. schistose