ophthalmology
noun/ˌɒfθælˈmɒlədʒi/, /ˌɒpθælˈmɒlədʒi/
/ˌɑːfθəˈmɑːlədʒi/, /ˌɑːpθəˈmɑːlədʒi/
[uncountable]- the scientific study of the eye and its diseases
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ophthalmology
Definition of ophthalmology noun from the Oxford Advanced Learner's Dictionary