from the GNU version of the Collaborative International Dictionary of English
- n. a genus of water ferns.
from The Century Dictionary and Cyclopedia
- n. A genus of floating ferns, constituting the family Ceratopteridaceæ. C. thalictroides, the only species, occurs in Florida and Louisiana and widely in the tropics.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. water ferns
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