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Từ điển WordNet v3.1 - WordNet Dictionary
tree fern
any of numerous usually tropical ferns having a thick woody stem or caudex and a crown of large fronds; found especially in Australia and New Zealand; chiefly of the families Cyatheaceae and Marattiaceae but some from Polypodiaceae • Hypernyms: fern • Hyponyms: silver tree fern, sago fern, black tree fern, Cyathea medullaris, soft tree fern, Dicksonia antarctica, Scythian lamb, Cibotium barometz, thyrsopteris, Thyrsopteris elegans, angiopteris, giant fern, Angiopteris evecta
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