Trass Trass, n. [D. tras or Gr. trass, probably fr. It. terrazzo terrace. See {Terrace}.] (Geol.) A white to gray volcanic tufa, formed of decomposed trachytic cinders; -- sometimes used as a cement. Hence, a coarse sort of plaster or mortar, durable in water, and used to line cisterns and other reservoirs of water. [Formerly written also {tarras}, {tarrace}, {terras}.] [1913 Webster]

Note: The Dutch trass is made by burning and grinding a soft grayish rock found on the lower Rhine. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Trass — ist der lokale Name für ein natürliches Puzzolan, das als Zusatzstoff bestimmten Zementen beigemischt wird. Im Raum Bergisch Gladbach verstand man unter Trass die Braunkohle, die man im Bensberger Erzrevier förderte.[1] Inhaltsverzeichnis 1… …   Deutsch Wikipedia

  • trass — (constr.) s. n. Trimis de siveco, 10.08.2004. Sursa: Dicţionar ortografic  TRASS s.n. v. tras. Trimis de LauraGellner, 13.09.2007. Sursa: DN  TRASS s. n. material prin măcinarea fină a unei varietăţi de tuf vulcanic, în mortaruri. (< …   Dicționar Român

  • trass — ⇒TRASS, subst. masc. GÉOL. Tuf volcanique entrant dans la préparation des mortiers hydrauliques. Dans le trass et la pouzzolane, la silice est dans un état particulier qui permet son union à la chaux (BOURDE, Trav. publ., 1928, p. 153).… …   Encyclopédie Universelle

  • Trass — is the local name of a volcanic tuff occurring in the Eifel, where it is worked for hydraulic mortar. It is a grey or cream coloured fragmental rock, largely composed of pumiceous dust, and may be regarded as a trachytic tuff. It much resembles… …   Wikipedia

  • trass — [tras] n. 〚Ger < Du tras < earlier terras < MFr terrace: see TERRACE〛 a volcanic rock, powdered and used in making a hydraulic cement * * * trass (trăs) n. A light colored tuff used in hydraulic cement.   [Dutch tras, short for obsolete …   Universalium

  • trass — [tras] n. [Ger < Du tras < earlier terras < MFr terrace: see TERRACE] a volcanic rock, powdered and used in making a hydraulic cement …   English World dictionary

  • Trass — Recorded in many forms including Trace, Traice, Trase, Trass, Tree, Treece, Trees, and Trosse, this is an English surname. It is topographical and describes a person who dwelt by a particular tree. In general as the countryside in ancient times… …   Surnames reference

  • Trass — Trạss 〈m. 1〉 verfestigter Bimssteintuff, der feingemahlen als hydraul. Zuschlag auf Trasszement od. Beton verwendet wird [<ital. terrazzo „Terrasse, Altan“] * * * Trạss [niederl. tras, terras u. frz. terrasse = Terrasse (lat. terra = Erde)] …   Universal-Lexikon

  • trass — n. (also tarras) a light coloured tuff used as cement material. Etymology: Du. trass, earlier terras, tiras f. Rmc: cf. TERRACE …   Useful english dictionary

  • trass — (tra s ) s. m. Espèce de tuf volcanique …   Dictionnaire de la Langue Française d'Émile Littré

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