schistn.¹

Brit.

/ʃɪst/, U.S.

/ʃɪst/

Forms: Also 1700s shist, shyst; and see schistus n.

Etymology: < French schiste (in 16th cent. scisth , in 18th cent. occasionally chite , in accordance with the then usual pronunciation), < Latin schistos adjective, fissile, readily splitting (lapis schistos , a kind of stone mentioned by Pliny), < Greek σχιστός (σχ. λίθος , ‘probably talc’, Liddell & Scott), < σχιδ- , σχίζειν to split: see schism n.

Geology.

a. A crystalline rock whose component minerals are arranged in a more or less parallel manner. Some continental writers call any fissile rock a ‘schist’, prefixing the word ‘crystalline’ to denote the rocks described in the above definition. The parallel structure in schists is independent of original stratification, being due to metamorphic action; indeed, many schists are modified igneous rocks.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [noun] > schist

schistus1775

schist1793

1793 Earl of Dundonald Descr. Estate Culross 6 A stratum of Feruginous Sulphurious Slate or Shyst.

1795 Philos. Trans. (Royal Soc.) 86 41 A thin stratum of vegetable soil lies uppermost; then clay, mingled with fine sand, composed of small particles of quartz, mica, and shist.

1831 H. T. De la Beche Geol. Man. v. 301 The schist, and its accompanying clays, contain an abundance of fossils.

1885 Teall (title) On the Metamorphosis of Dolomite into Hornblende-Schist.

1886 Bonney Presid. Addr. Geol. Soc. 57 Again in the mouth of one geologist a ‘schist’ will mean any rock that has a rough fissility,..while another restricts the term to the foliated rocks.

1903 A. Geikie Text-bk. Geol. II. 246 A rock possessing a crystalline arrangement into separate folia is in English termed a Schist.

1904 C. R. Van Hise Treat. Metamorphism (U.S. Geol. Surv.) (U.S. Geol. Survey) 780 Illustrations of the use of the term Schist both as the name of a definite rock and with a structural signification are furnished by the terms mica-schist, chlorite-schist, and hornblende-schist as generally used.

b. attributive.

ΚΠ

1839 A. Ure Dict. Arts 36 The evaporation of the Schist Lixivium.

1839 A. Ure Dict. Arts 39 For evaporating the schist liquors.

1878 Schiller's Technol. Dict. Schist-oil.

1903 A. Geikie Text-bk. Geol. (ed. 4) iv. viii. §1 782 The schist district of the Elbe valley hills in Saxony.

This entry has not yet been fully updated (first published 1910; most recently modified version published online March 2022).

schistn.²

/skɪst/

Forms: In quot. skhist.

Etymology: < Greek σχιστόν, neuter of σχιστός divided: see schist n.¹

Acoustics. rare.

A small interval equal to one-eighth of a schisma.

ΘΚΠ

society > leisure > the arts > music > musical sound > pitch > interval > [noun] > microtones > others

limma1694

apotome1696

diaschisma1753

schisma1753

schist1875

1875 A. J. Ellis tr. H. L. F. von Helmholtz On Sensations of Tone App. xix. 652 Skhistic, or Helmholtzian [temperament] as it may be called... The name Skhistic is derived from skhist..which I use for the small interval that is one-eighth of the Greek skhisma.

This entry has not yet been fully updated (first published 1910; most recently modified version published online December 2020).

单词	schist
释义	schistn.¹ Brit. /ʃɪst/, U.S. /ʃɪst/ Forms: Also 1700s shist, shyst; and see schistus n. Etymology: < French schiste (in 16th cent. scisth , in 18th cent. occasionally chite , in accordance with the then usual pronunciation), < Latin schistos adjective, fissile, readily splitting (lapis schistos , a kind of stone mentioned by Pliny), < Greek σχιστός (σχ. λίθος , ‘probably talc’, Liddell & Scott), < σχιδ- , σχίζειν to split: see schism n. Geology. a. A crystalline rock whose component minerals are arranged in a more or less parallel manner. Some continental writers call any fissile rock a ‘schist’, prefixing the word ‘crystalline’ to denote the rocks described in the above definition. The parallel structure in schists is independent of original stratification, being due to metamorphic action; indeed, many schists are modified igneous rocks. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [noun] > schist schistus1775 schist1793 1793 Earl of Dundonald Descr. Estate Culross 6 A stratum of Feruginous Sulphurious Slate or Shyst. 1795 Philos. Trans. (Royal Soc.) 86 41 A thin stratum of vegetable soil lies uppermost; then clay, mingled with fine sand, composed of small particles of quartz, mica, and shist. 1831 H. T. De la Beche Geol. Man. v. 301 The schist, and its accompanying clays, contain an abundance of fossils. 1885 Teall (title) On the Metamorphosis of Dolomite into Hornblende-Schist. 1886 Bonney Presid. Addr. Geol. Soc. 57 Again in the mouth of one geologist a ‘schist’ will mean any rock that has a rough fissility,..while another restricts the term to the foliated rocks. 1903 A. Geikie Text-bk. Geol. II. 246 A rock possessing a crystalline arrangement into separate folia is in English termed a Schist. 1904 C. R. Van Hise Treat. Metamorphism (U.S. Geol. Surv.) (U.S. Geol. Survey) 780 Illustrations of the use of the term Schist both as the name of a definite rock and with a structural signification are furnished by the terms mica-schist, chlorite-schist, and hornblende-schist as generally used. b. attributive. ΚΠ 1839 A. Ure Dict. Arts 36 The evaporation of the Schist Lixivium. 1839 A. Ure Dict. Arts 39 For evaporating the schist liquors. 1878 Schiller's Technol. Dict. Schist-oil. 1903 A. Geikie Text-bk. Geol. (ed. 4) iv. viii. §1 782 The schist district of the Elbe valley hills in Saxony. This entry has not yet been fully updated (first published 1910; most recently modified version published online March 2022). schistn.² /skɪst/ Forms: In quot. skhist. Etymology: < Greek σχιστόν, neuter of σχιστός divided: see schist n.¹ Acoustics. rare. A small interval equal to one-eighth of a schisma. ΘΚΠ society > leisure > the arts > music > musical sound > pitch > interval > [noun] > microtones > others limma1694 apotome1696 diaschisma1753 schisma1753 schist1875 1875 A. J. Ellis tr. H. L. F. von Helmholtz On Sensations of Tone App. xix. 652 Skhistic, or Helmholtzian [temperament] as it may be called... The name Skhistic is derived from skhist..which I use for the small interval that is one-eighth of the Greek skhisma. This entry has not yet been fully updated (first published 1910; most recently modified version published online December 2020). < n.¹1793n.²1875
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