point-of-service \¦ ̷ ̷ ̷ ̷ ˈ ̷ ̷ ̷ ̷ \adjective : of, relating to, or being a health-care insurance plan that allows enrollees to seek care from a physician affiliated with the service provider at a fixed co-payment fee or to choose a nonaffiliated physician and pay a larger share of the cost < point-of-service plan > — abbreviation POS