Look up: tufa

1. Tufa
   Cellular rock; porous limestone.
   Found on http://www.encyclo.co.uk/local/20018
   
   
2. tufa
   [n] - a soft porous rock consisting of calcium carbonate deposited from springs rich in lime
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. tufa
   a porous or compact form of CaC03 deposited out of solution from a mineral spring or lake Category: Chemistry
   Found on http://www.mijnwoordenboek.nl/definition
   
   
4. Tufa
   a very light sponge-like limestone formed in aireated springs, and used decoratively eg in grottos or where lightness is important eg at the top of domes. - see Stone/stonework
   Found on http://www.encyclo.co.uk/local/20935
   
   
5. Tufa
   A porous, grey stone of volcanic origin.
   Found on http://www.crsbi.ac.uk/resources/glossar
   
   
6. tufa
   <chemical> A soft or porous stone formed by depositions from water, usually calcareous; called also calcareous tufa. ... A friable volcanic rock or conglomerate, formed of consolidated cinders, or scoria. ... Origin: It. Fufo soft, sandy stone, L. Tofus, tophus. Cf. Tofus, Toph, and Tophin. .....
   Found on http://www.mondofacto.com/facts/dictiona
   
   
7. tufa
   calc-tufa noun a soft porous rock consisting of calcium carbonate deposited from springs rich in lime
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
8. Tufa
   • A friable volcanic rock or conglomerate, formed of consolidated cinders, or scoria. • A soft or porous stone formed by depositions from water, usually calcareous; -- called also calcareous tufa.
   Found on http://thinkexist.com/dictionary/meaning
   
   
9. TUFA
   Spongy or vesicular calcium carbonate deposited from spring, river or lake waters. Cf. travertine.
   Found on http://www.cancaver.ca/docs/glossary.htm
   
   
10. tufa
    tufa: see travertine.
    Found on http://www.infoplease.com/ce6/sci/A09198
    
    
11. Tufa
    Tufa (tuff or toph) is a soft white porous rock of calcium carbonate deposited from solution in spring water or percolating ground water. When compact it is called Travertine. Much of it is exceedingly light, and resembles petrified sponge. Tufa is extremely durable, and was extensively used by the ...
    Found on http://www.probertencyclopaedia.com/brow
    
    
12. tufa
    Soft, porous, limestone rock, white in colour, deposited from solution from carbonate-saturated ground water around hot springs and in caves. Undersea tufa columns, such as those in the Ikka Fjord in southwestern Greenland, that form over alkaline springs, can reach 20 m/65 ft in height and grow at about 50 cm/20 in per year. They provi...
    Found on http://www.talktalk.co.uk/reference/ency
    
    
13. Tufa
    `Tufa` is a variety of limestone, formed by the precipitation of carbonate minerals from ambient temperature water bodies. Geothermally heated hot-springs sometimes produce similar (but less porous) carbonate deposits known as isbn=1-4020-3523-3-->--> care must be taken when searching through litera...
    Found on http://en.wikipedia.org/wiki/Tufa