[gneiss] n [G Gneis, alter. of MHG gneiste spark, fr. OHG gneisto; akin to OE fyrgnast spark] (1757): a foliated metamorphic rock corresponding in composition to a feldspathic plutonic rock (as granite) -- gneiss.ic adj -- gneiss.oid adj -- gneiss.ose adj
GNEISS
Meaning of GNEISS in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012