Sensitive fern Meaning, Definition & Usage
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noun beautiful spreading fern of eastern North America and eastern Asia naturalized in western Europe; pinnately divided fronds show a slight tendency to fold when touched; pinnules enclose groups of sori in beadlike lobes
bead fern; Onoclea sensibilis.
WordNet
Definitions
(Bot.) , an American fern (Onoclea sensibilis ), the leaves of which, when plucked, show a slight tendency to fold together.