Schist meaning

shĭst
Frequency:
Any of various medium-grained to coarse-grained metamorphic rocks composed of laminated, often flaky parallel layers of chiefly micaceous minerals.
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Any of a group of metamorphic rocks containing parallel layers of flaky minerals, as mica or talc, and splitting easily into thin, parallel leaves.
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A highly foliated, medium-grained metamorphic rock that splits easily into flakes or slabs along well-defined planes of mica. The mineral composition of schist is varied and is often reflected in the name given to the rock. For example, a schist that contains garnet is called a garnet schist. A schist containing chlorite is called a chlorite schist.
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Any crystalline rock having a foliated structure and hence admitting of ready division into slabs or slates.
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Origin of schist

  • French schiste from Latin (lapis) schistos fissile (stone), a kind of iron ore from Greek skhistos split, divisible from skhizein to split skei- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From L schistos lapis, "the stone that is easy to split", from Greek skhizein, "to split".

    From Wiktionary