plural noun
Pro·​to·​nemertini | \¦prōt(ˌ)ō+\

Definition of Protonemertini 

in some classifications

: an order of unarmed nemertine worms in which the brain and lateral nerves lie outside the musculature

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History and Etymology for Protonemertini

New Latin, from prot- + Nemertini

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something that serves to warn or remind

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