open - outp
- open
- open access
- open annealing
- open annular end
- open architecture
- open architecture system
- open bearing
- open belt
- open belt drive
- open cable
- open casting
- open cell foam
- open circuit
- open circuit after charge
- open circuit after discharge
- open condition
- open cooling system
- open cycle
- open cycle engine
- Open Devicenet Vendors Association
- open die
- open die forging
- open end
- open end wrench
- open ended sequence
- open feeder
- open fluid drive
- open fluid power drive
- open fronted
- open fronted steady
- open gap vertical turning and boring mill
- open groove
- open guideways
- open impeller
- open industry standard
- open interface
- open joint
- open kinematic chain
- open link
- open loop
