- noun a storage read/write method in which the first item stored is the first read.
- Acronym for ftrst-in, first-out. A method of handling data in which the first item stored is the first item to be retrieved. In this manner, that which has been held the longest is that which is used first. Most printer queues use this scheme. This contrasts with LIFO, where the next item to be used is that which most recently arrived.