/ glɔːˈkəʊmə; NAmE glaʊˈkoʊmə; glɔː-/ noun
[ U ] an eye disease that causes gradual loss of sight
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WORD ORIGIN
mid 17th cent.: via Latin from Greek glaukōma , based on glaukos bluish-green, bluish-grey (because of the grey-green haze in the pupil).