Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun peristome

2 senses of peristome

Sense 1
peristome -- ((botany) fringe of toothlike appendages surrounding the mouth of a moss capsule)
       => plant process, enation -- (a natural projection or outgrowth from a plant body or organ)

Sense 2
peristome -- (region around the mouth in various invertebrates)
       => structure, anatomical structure, complex body part, bodily structure, body structure -- (a particular complex anatomical part of a living thing; "he has good bone structure")