ommatidium

play
noun om·ma·tid·i·um \ˌä-mə-ˈti-dē-əm\

Definition of ommatidium

plural

ommatidia

play \ˌä-mə-ˈti-dē-ə\
  1. :  one of the elements corresponding to a small simple eye that make up the compound eye of an arthropod

ommatidial

play \ˌä-mə-ˈti-dē-əl\ adjective

Origin and Etymology of ommatidium

New Latin, from Greek ommat-, omma eye; akin to Greek ōps eye — more at eye


First Known Use: 1884


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a dividing ridge between drainage areas

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