American Heritage® Dictionary of the English Language, Fourth Edition
- n. The calcareous and siliceous rock deposits of springs, lakes, or ground water.
- n. See tuff.
Century Dictionary and Cyclopedia
- n. A rock having a rough or cellular texture, sometimes a fragmental volcanic material, and sometimes a calcareous deposit from springs. The word tufa is rarely used by English geologists except with the epithet calcareous, when it has the same meaning as the tophus of Virgil and Pliny, or the travertino of the modern Italians. See
GNU Webster's 1913
- A soft or porous stone formed by depositions from water, usually calcareous; -- called also
- A friable volcanic rock or conglomerate, formed of consolidated cinders, or scoria.
- n. hard volcanic rock composed of compacted volcanic ash
- n. a soft porous rock consisting of calcium carbonate deposited from springs rich in lime
- From Italian tufo, from Latin tōphus or tōfus. (Wiktionary)
- Obsolete Italian tufa, tufo, from Latin tōfus. (American Heritage® Dictionary of the English Language, Fourth Edition)
“A dull gray, local stone called tufa forms the Surgeon's unimpressive impluvium, while black-and-white mosaic flooring seems to be restricted to two rooms: the tablinum and a cubiculum.”
“People sometimes call it tufa, like those stones you see in fish tanks.”
“It's not actually known what Edwin's symbol was Bede says he used a Roman-style standard called a tufa but doesn't describe it.”
“Prodigious quantities of ashes and cinders were discharged from the craters; and these, deposited and hardened by long pressure under water, formed the reddish-brown earthy rock called tufa, of which the seven hills of Rome are composed.”
“It will have to fight against the sand that slips and gradually fills up the small amount of empty space obtained; it will perhaps, without crowbar or pickaxe, have to cut itself a gallery through something tantamount to tufa, that is to say, through earth which a shower has rendered compact.”
“The etymology of Latin tofus 'tufa' isn't written ...”
“Paleoglot: The etymology of Latin tofus 'tufa' isn't written in stone skip to main”
“The etymology of Latin tofus 'tufa' isn't written in stone”
“Heracl.1.137, then further suggested that it be traced to Latin tōfus 'tufa' which in turn was stated to probably come from an Italic dialect.”
“But he mentioned, with evident pride, that he differed from all the scientific people who had visited the spot; and he flung about such words as "tufa" and "scilica" with careless freedom.”
These user-created lists contain the word ‘tufa’.
Soil samples for stone soup.
Shamelessly ripped off from this site and others (to be named hereinafter). (Fair warning: for my own edification, I may add definitions/comments from the site, but you might want to just go there ...
Words I've come across while reading and looked up in the dictionary.
The descriptive science described.
Looking for tweets for tufa.