stoma
英 [ˈstəʊmə]
美 [ˈstoʊmə]
n. 气孔(植物叶或茎表皮的小孔); (某些动物的)气门，呼吸孔; (尤指结肠或气管上的)造口
复数：stomas
COCA.43468
牛津词典
noun
- 气孔（植物叶或茎表皮的小孔）
a tiny pore (= hole) in the outer layer of a plant's leaf or stem - （某些动物的）气门，呼吸孔
a small opening like a mouth, in some animals - （尤指结肠或气管上的）造口
an artificial opening made in an organ of the body, especially in the colon or trachea
英英释义
noun
- a mouth or mouthlike opening (especially one created by surgery on the surface of the body to create an opening to an internal organ)
- a minute epidermal pore in a leaf or stem through which gases and water vapor can pass