from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Water chemically combined with a substance in such a way that it can be removed, as by heating, without substantially changing the chemical composition of the substance.
from the GNU version of the Collaborative International Dictionary of English
- n. water chemically combined with some substance to form a hydrate; -- distinguished from
water of crystallization.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the water present in hydrated compounds
Sorry, no etymologies found.