| 释义 | air vesicle
 air vesicleorair cavityn1.  (Botany) a large air-filled intercellular space in some aquatic plants2.  (Botany) a large intercellular space in a leaf into which a stoma opensair′ ves`iclen.   a large, air-filled pocket occurring chiefly in plants that float on water, as kelps.
 air vesicle
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