The Collaborative International Dictionary of English v.0.48:
Ceratopteris \Ceratopteris\ n. (Bot.) a genus of water ferns. Syn: genus Ceratopteris. [WordNet 1.5]WordNet (r) 3.0 (2006):
Ceratopteris n 1: water ferns [syn: Ceratopteris, genus Ceratopteris]