Definition of rhabdom in English:

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Pronunciation: /ˈrabˌdäm/ Pronunciation: /-dəm/
(also rhabdome /-ˌdōm/)


A translucent cylinder forming part of the light-sensitive receptor in the eye of an arthropod.
Example sentences
  • Postlarvae settling at the vents have reasonably normal ommatidia, with layered rhabdoms, standard crystalline cones, and faceted external corneas reflective of the zoeal apposition eye.
  • The receptors have long fused rhabdoms and are surrounded by a tracheal tapetum.
  • Thus, in some parts of the retina the larval rhabdoms are incorporated into the receptor array.


Late 19th century: from late Greek rhabdōma, from rhabdos 'rod'.

For editors and proofreaders

Syllabification: rhab·dom

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