from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An anthraquinone found in rhubarb.
from the GNU version of the Collaborative International Dictionary of English
- n. Chrysophanic acid.
from The Century Dictionary and Cyclopedia
- n. Same as rheic acid (which see, under rheic).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a major European river carrying more traffic than any other river in the world; flows into the North Sea
Rheum + -in (Wiktionary)