A B C D E F G H I K L M N O P R S T U V W X Dacryocystitis Synonym(s) - Dacryoadenitis Definition: Inflammation of the lacrimal sac. (Dorland, 27th ed) Broader term(s) Eye Diseases Lacrimal Apparatus Diseases Dacryocystitis MeSH © U.S. National Library of Medicine®.