Trass - definition, pronunciation, transcription

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Amer.  |tras|  American pronunciation of the word trass
Brit.  |tras|  British pronunciation of the word trass

noun

- (geology) A white to grey volcanic tufa, formed of decomposed trachytic cinders, sometimes used as a cement.
- A coarse sort of plaster or mortar, durable in water, and used to line cisterns and other reservoirs of water.
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