Definition of rhabdom in English:

rhabdom

(also rhabdome)

noun

Zoology
  • A translucent cylinder forming part of the light-sensitive receptor in the eye of an arthropod.

    • ‘In most species that have only a single visual pigment in main rhabdoms as adults, the larval pigment appears to be identical to that of the adult.’
    • ‘Thus, in some parts of the retina the larval rhabdoms are incorporated into the receptor array.’
    • ‘As mentioned above, the screening pigment is essential; otherwise, the rhabdoms would receive light from all directions, destroying any spatial information.’
    • ‘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.’

Origin

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

Pronunciation:

rhabdom

/ˈrabdəʊm/