(Botany)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 (植)气孔。 亦称stomate ■(Zoology)a small mouth-like opening in some lower animals (动)(低级动物的)口腔状小口 ■(Medicine)an artificial opening made into a hollow organ, especially one on the surface of the body leading to the gut or trachea (医)(尤指在身体表面直达内脏或气管的)人造口
派生 stomal adjective
(Medicine).)
语源
late 17th cent.: modern Latin, from Greek stoma 'mouth'