1. Inflammation of the prostate. The NIH consensus designates 4 categories of prostatitis: I, acute bacterial prostatitis; II, chronic bacterial prostatitis; III, chronic prostatitis/chronic pelvic pain syndrome: A, inflammatory and B, noninflammatory; and IV, asymptomatic inflammatory prostatitis
The definition information for prostatitis is provided by Stedman's. You can search our medical dictionary here.