pilidium definition

  • noun:
    • The free-swimming, hat-shaped larva of certain nemertean worms. This has no similarity to its moms and dad, and also the younger worm develops with its interior.
    • A generic title provided to the larvæ of rhynchocœle tur-bellarians, or nemertean worms, under the effect that they're distinct animals.
    • In conchology, a genus of false limpets regarding the family Acmæidæ.
    • [lowercase] In botany, a hemispherical apothecium in certain lichens.
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