Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Ancient Greek ὄμμα
Ancient Greek -μα (affix)
Proto-Indo-European *h₃ekʷ- (root)
Proto-Indo-European *h₃ekʷ- (derived)

English ommatidium (derived)
English ommatophore (derived)
English polyommatous (derived)
Greek μάτι (mention)
Ancient Greek ὁράω (mention)
Ancient Greek ὄψ (link)
Ancient Greek ὀπή (mention)
Italiot Greek madi (mention)
Translingual Zyxomma (mention)