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
24 December 2024
(adverb) in an intuitive manner; “inventors seem to have chosen intuitively a combination of explosive and aggressive sounds as warning signals to be used on automobiles”
The word “coffee” entered the English language in 1582 via the Dutch “koffie,” borrowed from the Ottoman Turkish “kahve,” borrowed in turn from the Arabic “qahwah.” The Arabic word qahwah was traditionally held to refer to a type of wine.
