(Zoology)the parts surrounding the mouth of various invertebrates (动)(无脊椎动物的)口围,围口部,口缘 ■(Botany)a fringe of small projections around the mouth of a capsule in mosses and certain fungi (植)(藓类的)蒴齿(层),(某些真菌的)子实竭
语源
late 18th cent.: from modern Latin peristoma, from Greek peri- 'around' + stoma 'mouth'