Webster’s Revised Unabridged Dictionary · 1913
Perisome
Per′i·some (pĕr′ĭ·sōm), n. [Pref. peri- + -some body.] (Zoöl.) The entire covering of an invertebrate animal, as echinoderm or cœlenterate; the integument.
Webster’s Revised Unabridged Dictionary · 1913
Per′i·some (pĕr′ĭ·sōm), n. [Pref. peri- + -some body.] (Zoöl.) The entire covering of an invertebrate animal, as echinoderm or cœlenterate; the integument.