| preferred direction | <microscopy> Orientation of a specimen as related to a structural or morphological direction, with respect to the polars. (05 Aug 1998) |
|---|---|
| preferred provider organization | A health care delivery model which uses a panel of eligible physicians. (05 Mar 2000) |
| preferred provider organizations | Arrangements negotiated between a third-party payer (often a self-insured company or union trust fund) and a group of health-care providers (hospitals and physicians) who furnish services at lower than usual fees, and, in return, receive prompt payment and an expectation of an increased volume of patients. (12 Dec 1998) |