POLYPLACOPHORA
\pˌɒlɪplˈakəfˌɔːɹə], \pˌɒlɪplˈakəfˌɔːɹə], \p_ˌɒ_l_ɪ_p_l_ˈa_k_ə_f_ˌɔː_ɹ_ə]\
Definitions of POLYPLACOPHORA
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small class of marine mollusks comprising the chitons; sometimes considered an order of the subclass Amphineura
By Princeton University