- heterorhabdic
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adj. [Gr. heteros, different; rhabdos, rod](MOLLUSCA: Bivalvia)Pertaining to plicate lamellibranchiate gill in which the filament in the bottom of the depression between two successive plicae is longer than the other filaments; see homorhabdic.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.