- Bot. the fringe of teeth around the opening of the spore case in mosses
- Zool. the area or parts surrounding the mouth or a mouthlike part of various invertebrates
Origin of peristomeModern Latin peristoma: see peri- and stoma
- Botany A fringe of toothlike appendages surrounding the mouth of a moss capsule.
- Zoology The area or parts around the mouth in certain invertebrates.
- per′i·sto′mal per′i·sto′mi·al
From peri- +"Ž Ancient Greek ÏƒÏ„ÏŒÎ¼Î± (stoma, “mouth")