Nereidiformia

plural noun

Ne·​re·​idi·​for·​mia

ˌnirēˌidəˈfȯrmēə,

nə̇ˌrēəd-

in some classifications

: a division of polychaete worms nearly equivalent to Errantia

Word History

Etymology

New Latin, from Nereid-, Nereis, genus of polychaete worms + -iformia (from Latin, neuter plural of -iformis -iform)

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