Medical Definition of DUCK. : any of various swimming birds (family Anatidae, the duck family) in which the neck and legs are short, the feet typically webbed, the bill often broad and flat, and the sexes usually different from each other in plumage.edical Definition of DUCK. : any of various swimming birds (family Anatidae, the duck family) in which the neck and legs are short, the feet typically webbed, the bill often broad and flat, and the sexes usually different from each other in plumage.
GDP Growth Rate in the United States averaged 3.25 percent from 1947 until 2015, reaching an all time high of 16.90 percent in the first quarter of 1950 and a record low of -10 percent in the first quarter of 1958.
Quarterly data: Real gross domestic product (GDP) increased at an annual rate of 2.1 percent in the fourth quarter of 2016 (table 1), according to the third estimate released by the Bureau of Economic Analysis. In the third quarter of 2016, real GDP increased 3.5 percent.