PROCTODAEUM
\pɹˈɒktədˌiːəm], \pɹˈɒktədˌiːəm], \p_ɹ_ˈɒ_k_t_ə_d_ˌiː__ə_m]\
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The latter part of the embryonic alimentary canal ; formed by analinvagination ; a similar ectodermlined part in certain invertebrates.
By Henderson, I. F.; Henderson, W. D.
