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terra alba

[al-buh, awl-]
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noun
  1. any of various white, earthy or powdery substances, as pipe clay, gypsum, kaolin, or magnesia.
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Origin of terra alba

1870–75; < Latin: white earth
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for terra alba

terra alba

noun
  1. a white finely powdered form of gypsum, used to make paints, paper, etc
  2. any of various other white earthy substances, such as kaolin, pipeclay, and magnesia
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Word Origin

from Latin, literally: white earth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012