Tuff
Chamber's Twientieth Century Dictionary · 1908 · p. 113
tuf, n. generally volcanic tuff , the name given to the comminuted rock-débris ejected from a volcanic orifice. [Fr. tuf , tuffe —It. tufo , tufa —L. tofus .]
Bu kavram başka kaynaklarda da geçiyor
Adair's New Encyclopedia (1923)
Trap-tuff
—
Nuttall's Standard Dictionary of the English Language (1890)
CALC-TUFF
—
A Dictionary of Arts, Manufactures and Mines (1840)
Readham'da tam maddeyi gor →