Noun
OPA (plural OPAs)
Abbreviation of optionally piloted aircraft.
When Bobbie tried to imagine being so wealthy you could own a spaceship just to compete in races, she failed. That the same girl had run away to be an OPA rebel probably said a lot about the relationship of wealth and contentment, but Bobbie had a hard time being that philosophical. Daniel Abraham
If Fred couldn't build himself a peace treaty, the OPA would never win against the discipline and unity of an inner planet navy. But they would also never lose. War without end. Well, what was history if not that? And how would having the stars change anything? Daniel Abraham
A third popular way to use OPA is to unify authorization across a suite of different products, sometimes known as entitlements services in sectors like banking. Source: Internet
Dorus became a Grandpa (Dutch:Opa), at the age of 23 (by marriage to a widow with eight children), and soon everybody called him Opa. Source: Internet
A mileage ration book issued by the OPA. Source: Internet
"Mama would be greatly missed by all, especially her immediate family, relatives, members of Opa' Compound(Ile Opa) members of the church, the market women all of whom she devoted her whole life to service till she took her last breath last night. Source: Internet