sto·ma
noun/ˈstəʊmə/
/ˈstəʊmə/
(plural stomas, stomata
/ˈstəʊmətə/
/ˈstəʊmətə/
)- (biology) a tiny pore (= hole) in the outer layer of a plant’s leaf or stem
气孔（植物叶或茎表皮的小孔） - (biology) a small opening like a mouth, in some animals
（某些动物的）气门，呼吸孔 - (medical) an artificial opening made in an organ of the body, especially in the colon or trachea
（尤指结肠或气管上的）造口
Word Originlate 17th cent.: modern Latin, from Greek stoma ‘mouth’.