Perisome

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Perisome \Per"i*some\, n. [Pref. peri- + -some body.] (Zool.)
     The entire covering of an invertebrate animal, as echinoderm
     or c[oe]lenterate; the integument.
     [1913 Webster]