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1. Oxford Dictionary

   stoma

   • IPA[ˈstəʊmə]

   英式

   • n.
     any of the minute pores in the epidermis of the leaf or stem of a plant, forming a slit of variable width which allows movement of gases in and out of the intercellular spaces.；a small opening like a mouth in some lower animals.

   • noun: stoma, plural noun: stomata

2. • 釋義

   n.

   名詞

   • 1. any of the minute pores in the epidermis of the leaf or stem of a plant, forming a slit of variable width which allows movement of gases in and out of the intercellular spaces.
   • ▪ a small opening like a mouth in some lower animals.
   • 2. an artificial opening made into a hollow organ, especially one on the surface of the body leading to the gut or trachea.