The Collaborative International Dictionary of English v.0.48:
Cystitis \Cys*ti"tis\ (s?s-t?"t?s), n. [Cyst + -itis: cf. F. cystite.] (Med.) Inflammation of the bladder. [1913 Webster]WordNet (r) 3.0 (2006):
cystitis n 1: inflammation of the urinary bladder and ureters