noun
a genus of fern sometimes placed in its own family Azollaceae
• Syn: ↑Azolla
• Hypernyms: ↑fern genus
• Member Holonyms: ↑Salviniaceae, ↑family Salviniaceae
• Member Meronyms: ↑mosquito fern, ↑floating fern, ↑Carolina pond fern, ↑Azolla caroliniana
Useful english dictionary. 2012.