Word Study
schist
CIDE DICTIONARY
schist, n. [Gr. divided, divisible, fr. to divide: cf. F. schiste. See Schism.].
Any crystalline rock having a foliated structure (see Foliation) and hence admitting of ready division into slabs or slates. The common kinds are mica schist, and hornblendic schist, consisting chiefly of quartz with mica or hornblende and often feldspar. [1913 Webster]
OXFORD DICTIONARY
schist, n. a foliated metamorphic rock composed of layers of different minerals and splitting into thin irregular plates.
Derivative
schistose adj.
Etymology
F schiste f. L schistos f. Gk skhistos split (as SCHISM)
THESAURUS
schist
aa, abyssal rock, basalt, bedrock, block lava, brash, breccia, conglomerate, crag, druid stone, festooned pahoehoe, gneiss, granite, igneous rock, lava, limestone, living rock, magma, mantlerock, metamorphic rock, monolith, pahoehoe, pillow lava, porphyry, pudding stone, regolith, rock, ropy lava, rubble, rubblestone, sandstone, sarsen, scoria, scree, sedimentary rock, shelly pahoehoe, stone, talus, tufa, tuffFor further exploring for "schist" in Webster Dictionary Online