dendrocoela

from The Collaborative International Dictionary of English v.0.48
Dendrocoela \Den`dro*c[oe]"la\, n. pl. [NL., fr. Gr. de`ndron
   tree + koi^los hollow.] (Zool.)
   A division of the Turbellaria in which the digestive cavity
   gives off lateral branches, which are often divided into
   smaller branchlets. Dendroid
    

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