| 释义 | 
		Definition of tree fern in English: tree fernnoun A large palmlike fern with a trunk that bears a crown of large fronds. Tree ferns sometimes reach a height of 24 m and occur chiefly in the tropics, particularly the southern hemisphere. Cyatheaceae and related families, class Filicopsida: seven genera, in particular Cyathea and Dicksonia  Example sentencesExamples -  The new Mediterranean Garden is beginning to grow, and the new tree fern now has 6 fronds and more coming on.
 -  In a partial cross section of a tree fern that lived about 200 million years ago, blue chalcedony (a type of quartz) and orange iron oxides and hydroxides have replaced the original structures.
 -  The flat, strappy foliage of the exotic night bloomer contrasts texturally with a bed companion, the enormous, finely cut fronds of an Australian tree fern.
 -  Two years ago, I bought a tree fern and potted it as per instructions.
 -  The tree fern is usually thought of as a conservatory plant, too tender for year-round outdoors except in the most sheltered circumstances, but I seem to notice more and more of them thriving outside.
 
    Definition of tree fern in US English: tree fernnounˈtrē ˌfərn A large palmlike fern with a trunk that bears a crown of large fronds. Tree ferns sometimes reach a height of 24 m and occur chiefly in the tropics, particularly the southern hemisphere. Cyatheaceae and related families, class Filicopsida: seven genera, in particular Cyathea and Dicksonia  Example sentencesExamples -  The flat, strappy foliage of the exotic night bloomer contrasts texturally with a bed companion, the enormous, finely cut fronds of an Australian tree fern.
 -  Two years ago, I bought a tree fern and potted it as per instructions.
 -  In a partial cross section of a tree fern that lived about 200 million years ago, blue chalcedony (a type of quartz) and orange iron oxides and hydroxides have replaced the original structures.
 -  The tree fern is usually thought of as a conservatory plant, too tender for year-round outdoors except in the most sheltered circumstances, but I seem to notice more and more of them thriving outside.
 -  The new Mediterranean Garden is beginning to grow, and the new tree fern now has 6 fronds and more coming on.
 
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