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coelomostome

noun
coe·​lo·​mo·​stome | \ˈsē(ˈ)lōməˌstōm, -lə-, sə̇ˈlō-\
plural -s

Definition of coelomostome 

: the coelomic opening of a coelomoduct

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History and Etymology for coelomostome

coelom + -o- + stome

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