terr - time
- terrain and obstacle clearance
- terrain avoidance display
- terrain board model
- terrain following display
- terrain following system
- terrain texture
- terrain visor
- terrain-following flight
- terrestrial adaptation
- terrestrial atmosphere
- terrestrial gravity
- terrestrial life
- terrestrial orientation
- terrestrial soil
- terror
- test anxiety scale
- test battery
- test chamber
- test crew
- test device
- test drop
- test length
- test medium
- test methodology
- test model
- test of adaptation
- test of fitness
- test of hypothesis
- test of numerical ability
- test of performance efficiency
- test of physical fitness
- test of selective attentiveness
- test performance
- test philosophy
- test pilot course
- test reliability
- test run
- test set
- test setup
- test situation
