noun see: stomach Date: circa 1796 the fringe of teeth surrounding the orifice of a moss capsule, the region around the mouth in various invertebrates, peristomial adjective
PERISTOME
Meaning of PERISTOME in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012