Definitions
from The Century Dictionary.
- noun A locomotor organ in the trochophore larvæ of many marine annelids. It consists of a band of thickened cells encircling the body of the larva in front of the mouth and bearing strong motile cilia. See
preoral circlet .
Etymologies
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Examples
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Dictus WJ (1996) Organiser role of the stem cell of the mesoderm in prototroch patterning in
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