rhabdom

noun
rhab·​dom | \ˈrab-ˌdäm, -dəm\
variants: or rhabdome \ ˈrab-​ˌdōm \

Definition of rhabdom 

: one of the minute rodlike structures in the retinulae in the compound eyes of arthropods

First Known Use of rhabdom

1878, in the meaning defined above

History and Etymology for rhabdom

New Latin, from Late Greek rhabdōma bundle of rods, from Greek rhabdos rod

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The first known use of rhabdom was in 1878

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