The branched digestive cavity or internal space of certain flatworms, shaped like tree roots spreading through their body.
From Greek dendro- (tree) + koila (cavity). Variant spelling of dendrocoela used to describe the specific anatomical feature that gives this group its characteristic name.
A dendrocoele is basically nature's delivery system—imagine a tree's root system but for digestion, spreading through the flatworm's entire body to absorb nutrients efficiently without needing a separate circulatory system!
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