firs - free
- first aid
- first article
- first associates
- first calibration
- first check
- first failure
- first failure mode
- first grade
- first item
- first line servicing
- first line supervisor
- first moment
- first passage time
- first preventive replacement
- first priority
- first product moment
- first production lot
- first quality
- first quartile
- first renewal
- first sample
- first sampling level
- first-article [first-piece] inspection
- first-class line
- first-class [first-priority] customer
- first-class [first-priority] unit
- first-class [first-rate] quality
- first-come-first-out
- first-come-first-served queue
- first-come-first-served [first-in-first-out] discipline
- first-echelon maintenance
- first-grade
- first-in-first-out
- first-in-first-out method
- first-in-first-out policy
- first-in-first-out principle
- first-in-first-out rule
- first-in-last-out
- first-in-last-out principle
- first-order design
