from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A white powdery compound, Na2CO3, used in the manufacture of baking soda, sodium nitrate, glass, ceramics, detergents, and soap.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A salt, Na2CO3 formally derived from sodium hydroxide and carbonic acid; it is a white powder, soluble in water, with domestic, commercial and industrial uses; it occurs naturally as natrite
from the GNU version of the Collaborative International Dictionary of English
- n. a white crystalline substance, Na2CO3.10H2O, having a cooling alkaline taste, found in the ashes of many plants, and produced artifically in large quantities from common salt. It is used in making soap, glass, paper, etc., and as alkaline agent in many chemical industries. Called also sal soda, washing soda, or soda. Cf. Sodium bicarbonate, and Trona.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a sodium salt of carbonic acid; used in making soap powders and glass and paper
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