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Meaning of rhabdom

rhab•dom

Pronunciation: (rab'dum, -dom), [key]
— n. Anat., Zool.
  1. any of various rod-shaped structures.
  2. the rod-shaped portion of an arthropod ommatidium.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.