Dictionary.com
definitions

preferred-provider organization

[pri-furd-pruh-vahy-der]
noun
  1. a comprehensive health-care plan offered to corporate employees that allows them to choose their own physicians and hospitals within certain limits. Abbreviation: PPO
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
preferred provider organization in Medicine

preferred provider organization

[prĭ′fûrd′]
n.
  1. A medical insurance plan in which members receive more coverage if they choose health care providers approved by or affiliated with the plan.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.