Lexic.us

Definition of Trass

1. n. 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.

Definition of Trass

1. Noun. (geology) A white to grey volcanic tufa, formed of decomposed trachytic cinders, sometimes used as a cement. ¹

2. Noun. A coarse sort of plaster or mortar, durable in water, and used to line cisterns and other reservoirs of water. ¹

¹ Source: wiktionary.com

Definition of Trass

1. a volcanic rock [n -ES]

Medical Definition of Trass

1. 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. The Dutch trass is made by burning and grinding a soft grayish rock found on the lower Rhine. Origin: D. Tras or Gr. Trass, probably fr. It. Terrazzo terrace. See Terrace. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Trass

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