perisome
Per"i*some, n. Etym: [Pref. peri- + -some body.] (Zoöl.) Defn: The entire covering of an invertebrate animal, as echinoderm or coelenterate; the integument.
Per"i*some, n. Etym: [Pref. peri- + -some body.] (Zoöl.) Defn: The entire covering of an invertebrate animal, as echinoderm or coelenterate; the integument.