What is orangeade?

Orangeade is a sweetened beverage of orange juice and water. It first appeared as a variety of carbonated drink provided in soda fountains in American drugstore in the late 19th century, brands including Miner’s and Lash’s. A recipe for homemade orangeade appears in editions of Fannie Farmer’s cookbook.

Before the late 19th century well-to-do Americans occasionally imported oranges from Bermuda and the Bahamas and occasionally made orangeade out of them.

One of the best methods of making lemonade is, to prepare a syrup of sugar and water over a clear fire, skimming it quite clean; to this add the juice of any number of lemons, according to the quantity wish to make; also some rinds.

According to Association of Food and Drug Officials of the United States (AFDOUS) Orangeade shall contain at least 0.257 lb of orange juice soluble solids per gallon, 11.8 ° Brix basis.
What is orangeade?