from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Water containing little or no dissolved salts of calcium or magnesium, especially water containing less than 85.5 parts per million of calcium carbonate.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Water with a low concentration of dissolved minerals, especially calcium, making it easier to lather with soap.
from the GNU version of the Collaborative International Dictionary of English
- n. water not impregnated with lime or mineral salts.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. water that is not hard (does not contain mineral salts that interfere with the formation of lather with soap)
Sorry, no etymologies found.