1. A white to grey 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

Derived forms: trasses

Encyclopedia: Trass

• straight-line method of depreciation
• straight-out
• straightarrow
• straightaway
• straightedge
• straighten
• straighten out
• straighten up
• straightener
• straightforward
• straightforwardly
• straightforwardness
• straightjacket
• straightlaced
• straightly
• straightness
• straightway
• strain
• strain gage
• strain gauge
• strained
• strainer
• strainer vine
• straining
• strait