from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An acid, H2Cr2O7, known only in solution.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A relatively unstable form of chromic acid, H2Cr2O7, known only in solution or as its salts, the dichromates, from which it may be prepared.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the hypothetical acid (H2Cr2O7) from which dichromates are derived; known only in solution and in the form of dichromate salts
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