from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A blue, crystalline pentahydrate of copper sulfate, CuSO4·5H2O.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun obsolete, chemistry
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun hydrated blue crystalline form of copper sulfate
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