Definitions of peristome
  1. noun
    (botany) fringe of toothlike appendages surrounding the mouth of a moss capsule
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    type of:
    enation, plant process
    a natural projection or outgrowth from a plant body or organ
  2. noun
    region around the mouth in various invertebrates
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    type of:
    anatomical structure, bodily structure, body structure, complex body part, structure
    a particular complex anatomical part of a living thing
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