prototroch
noun
pro·to·troch
\ˈprōtə‧ˌträk\
Definition of prototroch
-s
: the ciliated band or ring characteristic of trochophore larvae
prototrochal
\prōtä‧trəkəl\ adjectivePeople Are Reading
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Origin and Etymology of prototroch
prot- + -troch
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