MAP BLOWUP is a process of enlarging a map to make it easier to read. It involves taking a small map and enlarging it to a larger size, usually by using a photocopier or scanner. This process can be used to make a map more detailed and easier to read, as well as to make it easier to compare different maps. The term MAP BLOWUP is derived from the process of blowing up a map, which is the act of enlarging it.