any of a group of metamorphic rocks containing parallel layers of flaky minerals, as mica or talc, and splitting easily into thin, parallel leaves
Origin of schistFrench schiste from Classical Latin schistos (lapis), split (stone) from Classical Greek schistos, easily cleft from schizein, to cleave: see schizo-
Any of various medium-grained to coarse-grained metamorphic rocks composed of laminated, often flaky parallel layers of chiefly micaceous minerals.
Origin of schistFrench schiste from Latin (lapis) schistos fissile (stone), a kind of iron ore from Greek skhistos split, divisible from skhizein to split ; see skei- in Indo-European roots.
- schis′tose′ schis′tous
From L schistos lapis, "the stone that is easy to split", from Greek skhizein, "to split".