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Perischoechinoida
plural noun
Pe·ris·cho·ech·i·noi·da
\pə¦ris(ˌ)kōˌekəˈnȯidə\
Definition of Perischoechinoida
: a large order of regular Paleozoic Echinoidea
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Origin and Etymology of perischoechinoida
New Latin perischo- (from Greek perischesis surrounding, from periechein, perischein to surround—from peri- + echein, schein to have, hold—+ -sis) + echin- + -oida
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