|a relation between two sets in which one element of the second set is assigned to each element of the first set, the operator|
|the process of determining the answer to a problem, or the answer itself|
"Þou most know þat subtraccion is drawynge of one nowmber oute of anoþer nomber." ["The Crafte of Nombrynge," c.1425]
|subtraction (səb-trāk'shən) Pronunciation Key
The operation of finding the difference between two numbers or quantities.