redu - repl
- regenerative repeater
- regenerative store
- regenerative tracking
- regenerator
- regime
- regime of flight
- regime of run-off
- region
- region of admissible deviations
- region of asymptotical stability
- region of classification
- region of compromise
- region of convergence
- region of definition
- region of determination
- region of deviations
- region of existence
- region of feasibility
- region of holomorphy
- region of influence
- region of integration
- region of overlap
- region of preference
- region of search
- region of space
- region of summability
- region of summation
- region of variation
- regional centre
- regional code
- regional development plan
- regional engineering-technolgical service
- regional identity code
- regional number
- regional plan
- regional planning
- regional reservoir
- regional stability
- regional switching center
- register
