D defs.my
Entry 1 sense Webster, 1913

Perisome

· Per·i·some · IPA
01 n. The entire covering of an invertebrate animal, as echinoderm or cœlenterate; the integument.
  1. 1.
    The entire covering of an invertebrate animal, as echinoderm or cœlenterate; the integument.(Zool.)