open - outp
- open
- open address
- open circuit
- open circuit fault
- open end
- open loop
- open numbering plan
- open routine
- open systems
- Open Systems Foundation
- Open Systems Interconnection
- open wire
- open-circuit admittance
- open-circuit impedance
- open-circuit voltage
- open-circuit working
- open-ended
- open-shop operation
- open-systems network
- open-wire line
- open-wire telegraphy
- open-wire telephone line
- operand
- operand field
- operate
- operate current
- operate level
- operate time
- operating characteristics
- operating current
- operating cycle
- operating frequency
- operating frequency characteristic
- operating instructions
- operating limit
- operating point
- operating sequence
- operating status memory
- operating system
- operating temperature
