The term CD Followers can be defined as ROMS (4 letters) and EFG (3 letters). ROMS stands for Read-Only Memory Store, which is a type of memory that stores data permanently and cannot be changed. EFG stands for Electronic Follower Guide, which is a device used to control the speed of a motor or other machine. CD Followers are used in many industries, such as automotive, aerospace, and medical, to ensure that machines are running at the correct speed.