ves·i·cle /ˈvɛsɪkəl/
  小囊,水泡,小水泡
  ves·i·cle /ˈvɛsɪkəl/ 名詞
  小囊泡,小水泡,頂囊
  Ves·i·cle n.  A bladderlike vessel; a membranous cavity; a cyst; a cell.  Specifically: --
  (a) Bot. A small bladderlike body in the substance of a vegetable, or upon the surface of a leaf.
  (b) Med. A small, and more or less circular, elevation of the cuticle, containing a clear watery fluid.
  (c) Anat. A cavity or sac, especially one filled with fluid; as, the umbilical vesicle.
  (d) Zool. A small convex hollow prominence on the surface of a shell or a coral.
  (e) Geol. A small cavity, nearly spherical in form, and usually of the size of a pea or smaller, such as are common in some volcanic rocks. They are produced by the liberation of watery vapor in the molten mass.
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  vesicle
       n : a small anatomically normal sac or bladderlike structure
           (especially one containing fluid) [syn: cyst]