triasn.

Brit.

/ˈtrʌɪas/, U.S.

/ˈtraɪəs/

Etymology: < late Latin trias, < Greek τριάς the number three: see triad n. In sense 2, < German Trias.

1. The number three; a set of three, a triad.

ΘΚΠ

the world > relative properties > number > specific numbers > three > [noun]

threec1175

trias1610

triad1660

the world > relative properties > number > specific numbers > three > group of three > [noun]

leashc1330

ternarya1464

trinity1542

three?1544

triad1546

trine1554

triplicity1585

ternion1587

pair royal1592

trinary1596

trias1610

gleek1615

triangle1621

triple1653

triumvirate1655

prial1776

trio1777

trefoil1826

trinomy1838

Pip, Squeak, and Wilfred1937

1610 E. Bolton Elements of Armories 182 One is onely best: next to that the Trias, Ternio, or number three, and so the rest of the Odde to Fifteen.

1635 T. Heywood Hierarchie Blessed Angells ii. 68 Sometimes, what's proper vnto Man alone, Is giuen to this Trias, three in One: As, when we attribute vnto him Wings.

1727 H. Herbert tr. C. Fleury Eccl. Hist. I. 250 This is the first time that we meet in the ancients with the word Trias, or Trinity in this sense.

1864 Daily Tel. 9 Sept. A people with whom drinking, smoking, and spitting are the Trias of social bliss.

2. Geology. (Usually with capital initial.) Name for the series of strata lying immediately beneath the Jurassic and above the Permian; so called because divisible, where typically developed (as in Germany), into three groups (Keuper, Muschelkalk, and Bunter Sandstein); represented in Britain by the Upper New Red Sandstone and associated formations.

ΘΚΠ

the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > secondary or Mesozoic > Triassic

trias1841

1841 R. I. Murchison et al. in Proc. Geol. Soc. (1842) 3 403 The Trias of German geologists.

1842 A. Sedgwick in Hudson's Guide Lakes (1843) 204 In France and Germany the series of rocks..admits of a triple division (called ‘Trias’, or the ‘Triassic system’).

1876 D. Page Adv. Text-bk. Geol. (ed. 6) xvi. 289 The reason for regarding the Trias as mesozoic.

1912 Return Brit. Museum 169 A slab of Rhynchocephalian and other footprints from the Trias of Storeton, Cheshire.

Compounds

attributive and in other combinations (in sense 2).

ΚΠ

1855 J. Phillips Man. Geol. 248 Bands of red and blue trias-like sandstones and clays.

1867 W. W. Smyth Treat. Coal & Coal-mining 240 Reaching coal beneath the Permian and Trias formations.

This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2022).

单词	trias
释义	triasn. Brit. /ˈtrʌɪas/, U.S. /ˈtraɪəs/ Etymology: < late Latin trias, < Greek τριάς the number three: see triad n. In sense 2, < German Trias. 1. The number three; a set of three, a triad. ΘΚΠ the world > relative properties > number > specific numbers > three > [noun] threec1175 trias1610 triad1660 the world > relative properties > number > specific numbers > three > group of three > [noun] leashc1330 ternarya1464 trinity1542 three?1544 triad1546 trine1554 triplicity1585 ternion1587 pair royal1592 trinary1596 trias1610 gleek1615 triangle1621 triple1653 triumvirate1655 prial1776 trio1777 trefoil1826 trinomy1838 Pip, Squeak, and Wilfred1937 1610 E. Bolton Elements of Armories 182 One is onely best: next to that the Trias, Ternio, or number three, and so the rest of the Odde to Fifteen. 1635 T. Heywood Hierarchie Blessed Angells ii. 68 Sometimes, what's proper vnto Man alone, Is giuen to this Trias, three in One: As, when we attribute vnto him Wings. 1727 H. Herbert tr. C. Fleury Eccl. Hist. I. 250 This is the first time that we meet in the ancients with the word Trias, or Trinity in this sense. 1864 Daily Tel. 9 Sept. A people with whom drinking, smoking, and spitting are the Trias of social bliss. 2. Geology. (Usually with capital initial.) Name for the series of strata lying immediately beneath the Jurassic and above the Permian; so called because divisible, where typically developed (as in Germany), into three groups (Keuper, Muschelkalk, and Bunter Sandstein); represented in Britain by the Upper New Red Sandstone and associated formations. ΘΚΠ the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > secondary or Mesozoic > Triassic trias1841 1841 R. I. Murchison et al. in Proc. Geol. Soc. (1842) 3 403 The Trias of German geologists. 1842 A. Sedgwick in Hudson's Guide Lakes (1843) 204 In France and Germany the series of rocks..admits of a triple division (called ‘Trias’, or the ‘Triassic system’). 1876 D. Page Adv. Text-bk. Geol. (ed. 6) xvi. 289 The reason for regarding the Trias as mesozoic. 1912 Return Brit. Museum 169 A slab of Rhynchocephalian and other footprints from the Trias of Storeton, Cheshire. Compounds attributive and in other combinations (in sense 2). ΚΠ 1855 J. Phillips Man. Geol. 248 Bands of red and blue trias-like sandstones and clays. 1867 W. W. Smyth Treat. Coal & Coal-mining 240 Reaching coal beneath the Permian and Trias formations. This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2022). < n.1610
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