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Question: What is an Ounce ?

Answer:

An ounce is an imperial unit for measuring mass. 16 ounces equal 1 pound. The ounce is a unit of mass in a number of different systems, including various systems of mass that form part of the imperial and United States customary systems. Its size can vary from system to system. The most commonly used ounces today are the international avoirdupois ounce and the international troy ounce.