schist /ʃɪst/
noun [uncountable][
Date: 1700-1800;
Language: French;
Origin: schiste, from Latin schistos (lapis) 'stone that can be split', from Greek, from schizein; ⇒ schism]
a type of rock that naturally breaks apart into thin flat pieces
[TahlilGaran] Dictionary of Contemporary English ▲