a formal ball held for a school class toward the end of the academic year; promenade
Microsoft Computer Dictionary
n. Acronym for programmable read-only memory. A type of read-only memory (ROM) that allows data to be written into the device with hardware called a PROM programmer. After a PROM has been programmed, it is dedicated to that data, and it cannot be reprogrammed. See also EEPROM, EPROM, ROM (definition 2).