floating fern
美 [ˈfloʊtɪŋ fɜːrn]英 [ˈfləʊtɪŋ fɜːn]
- 网络满江红;水蕨
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noun
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1
- small free-floating aquatic fern from the eastern United States to tropical America;naturalized in western and southern Europe
- Synonym: mosquito fern Carolina pond fern Azolla caroliniana
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2
- aquatic fern of tropical America often used in aquariums
- Synonym: water sprite Ceratopteris pteridioides
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3
- pantropical aquatic fern
- Synonym: Ceratopteris thalictroides
数据来源:WordNet