tuff, tufa
(noun) hard volcanic rock composed of compacted volcanic ash
tufa, calc-tufa
(noun) a soft porous rock consisting of calcium carbonate deposited from springs rich in lime
Source: WordNet® 3.1
tufa (countable and uncountable, plural tufas)
Calcareous lime deposited by precipitation from a body of water, such as a hot spring.
(rock) A variety of volcanic rock, tuff.
Synonym: tuff
• (calcareous deposit): calcite, limestone
• FUTA, UFTA, futa
Source: Wiktionary
Tu"fa, Etym: [It. fufo soft, sandy stone, L. tofus, tophus. Cf. Tofus, Toph, and Tophin.] (Min.) (a) A soft or porous stone formed by depositions from water, usually calcareous; -- called also calcareous tufa. (b) A friable volcanic rock or conglomerate, formed of consolidated cinders, or scoria.
Source: Webster’s Unabridged Dictionary 1913 Edition
3 March 2025
(verb) hold one’s ground; maintain a position; be steadfast or upright; “I am standing my ground and won’t give in!”
According to Guinness World Records, on 25 September 2016, the Birla Institute of Management Technology (India) in Uttar Pradesh, India, constructed the largest coffee cups pyramid consisting of 23,821 cups. They used paper takeaway coffee cups to build the pyramid.
