A B C D E F G H I K L M N O P R S T U V W X Chalazion Synonym(s) - Meibomian Cyst - Cyst, Meibomian Definition: A non-neoplastic cyst of the MEIBOMIAN GLANDS of the eyelid. Broader term(s) Neoplasms Cysts Chalazion MeSH © U.S. National Library of Medicine®.