👉 In mathematics, "sursize" is a term used to describe the size of an object or system. It refers to the total amount of matter present in a given quantity, such as mass, volume, energy, etc., divided by its corresponding unit of measurement. For example, if we have a mass of 10 kg and want to find out how many grams are contained within it, we would divide 10 by 1000 to get the answer in grams.