What is "oroblanco"

n. A hybrid fruit developed by crossing a pomelo and a white grapefruit. When fully developed it's approximately the size of a grapefruit.

An oroblanco, oro blanco (white gold) or sweetie ( Citrus grandis Osbeck × C. Paradisi Macf.) is a sweet seedless citrus hybrid fruit similar to grapefruit.

It is often referred to as oroblanco grapefruit.