Read-only memory, a type of storage media which is used in computers and other electronic devices. This tells the computer how to load the operating system.
older Mac computers typically included Old World ROM
newer Mac computers typically included New World ROM
ROM image, a computer file which contains a copy of the data from a read-only memory chip
ROM (MUD), a popular MUD codebase
Random oracle, as in "random oracle model", a mathematical abstraction used in cryptographic proofs
ROM cartridges, a portable form of read-only memory