(aviation) A specified region of airspace in which a flight information service and an alerting service are provided.

A regional district of Sunshine Coast, British Columbia, Canada. Seat: City of Powell River

The region of Brazil comprising the states of Goiás, Mato Grosso, Mato Grosso do Sul and the Distrito Federal.

An autonomous region of Indonesia. Capital: Yogyakarta

A historical region in the Philippines, composed of the provinces of Sulu, Tawi-Tawi, Lanao del Sur, Basilan, and Maguindanao

plural of complex regional pain syndrome

(biology, medicine) A chronic systemic disease characterized by severe pain, swelling, changes in the skin (e.g., erythema, edema), functional impairment, and sensory and vasomotor disturbance. Often it initially affects an arm or leg before spreading through the body; it is associated with dysregulation of the central nervous system and autonomic nervous system.

an autonomous region located in the southern Philippines.