An ounce is a unit of mass or weight commonly used in various contexts, including commerce, cooking, and science. It is abbreviated as "oz." One ounce is equal to approximately 28.3495 grams. In terms of weight measurement, there is no difference between the US and UK ounce. However, the US and UK ounces differ slightly when used as a unit of volume measurement for liquids, a measurement more commonly known as the fluid ounce. So, it is important to specify which system is being used in order to ensure accurate measurements.

What is "ounce"?

Définition et signification de « ounce » en anglais

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