chalazion

noun
cha·​la·​zi·​on | \ kə-ˈlā-zē-ən, -ˌän How to pronounce chalazion (audio) \
plural chalazia\ -​zē-​ə How to pronounce chalazia (audio) \

Medical Definition of chalazion

: a small circumscribed tumor of the eyelid formed by retention of secretions of the meibomian gland and sometimes accompanied by inflammation

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