Peristome



[per-uh-stohm] /ˈpɛr əˌstoʊm/

noun
1.
Botany. the one or two circles of small, pointed, toothlike appendages around the orifice of a capsule or urn of mosses, appearing when the lid is removed.
2.
Zoology. any of various structures or sets of parts that surround or form the walls of a mouth or mouthlike opening.
/ˈpɛrɪˌstəʊm/
noun
1.
a fringe of pointed teeth surrounding the opening of a moss capsule
2.
any of various parts surrounding the mouth of invertebrates, such as echinoderms and earthworms, and of protozoans
peristome
(pěr’ĭ-stōm’)

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