PPO 
/ˌpi:ˌpi:ˈoʊ/ noun
plural PPOs /ˌpi:ˌpi:ˈoʊ/ noun [count] US : an organization that provides health care to people at a lower cost if they use the doctors, hospitals, etc., that belong to the organization
▪ I'm not sure if that doctor belongs to my PPO. ◊PPO is an abbreviation of “preferred provider organization.” — compare hmo
▪ I'm not sure if that doctor belongs to my PPO. ◊PPO is an abbreviation of “preferred provider organization.” — compare hmo
