trassn.

Brit.

/trɑːs/,

/tras/, U.S.

/træs/

Forms: Also 1700s traas, traass.

Etymology: < Dutch tras, German trasz, earlier teˈrras, tiˈras.

= tarras n.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > volcanic rocks > other volcanics

tarras1612

greystone1781

trass1794

rhyolite1861

nephelinite1863

metavolcanic1942

1793 J. Smeaton Narr. Edystone Lighthouse (ed. 2) §201 Tarras. [Note] This substance, when prepared for use, is by the Dutch called Tras, from which our appellation of Tarras undoubtedly originates.]

1794 R. Kirwan Elements Mineral. (ed. 2) I. 354 Often mistaken for volcanic traass.

1811 J. Pinkerton Petralogy II. 427 The trass of the environs of Andernach, on the left bank of the Rhine, is a kind of puzzolana formed of small fragments of pumice, and several species of lavas... Trass is transported by water as far as Dort, to be reduced to powder in stamping mills worked by the wind... The Dutch also supply England with trass.

1838 Civil Engineer & Architect's Jrnl. 1 412/2 Tarras, or trass, is a bluish black cellular trap or lava, quarried at Andernach on the Rhine, into millstones.

1862 G. P. Scrope Volcanos (ed. 2) 178 Both puzzolana and trass, when mixed up with lime, set readily under water.

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

单词	trass
释义	trassn. Brit. /trɑːs/, /tras/, U.S. /træs/ Forms: Also 1700s traas, traass. Etymology: < Dutch tras, German trasz, earlier teˈrras, tiˈras. = tarras n. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > volcanic rocks > other volcanics tarras1612 greystone1781 trass1794 rhyolite1861 nephelinite1863 metavolcanic1942 1793 J. Smeaton Narr. Edystone Lighthouse (ed. 2) §201 Tarras. [Note] This substance, when prepared for use, is by the Dutch called Tras, from which our appellation of Tarras undoubtedly originates.] 1794 R. Kirwan Elements Mineral. (ed. 2) I. 354 Often mistaken for volcanic traass. 1811 J. Pinkerton Petralogy II. 427 The trass of the environs of Andernach, on the left bank of the Rhine, is a kind of puzzolana formed of small fragments of pumice, and several species of lavas... Trass is transported by water as far as Dort, to be reduced to powder in stamping mills worked by the wind... The Dutch also supply England with trass. 1838 Civil Engineer & Architect's Jrnl. 1 412/2 Tarras, or trass, is a bluish black cellular trap or lava, quarried at Andernach on the Rhine, into millstones. 1862 G. P. Scrope Volcanos (ed. 2) 178 Both puzzolana and trass, when mixed up with lime, set readily under water. This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2022). < n.1794
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