roun - Schl
- round grating
- round hole
- round iron
- round layout
- round rope
- round-off accumulator (accumulator register, counter) (ADP)
- round-screen grating
- round-strand rope
- round-timber bulkhead
- round-trip cycle
- round-trip time
- rounded; smoothed curve
- routine investigations
- routine maintenance
- rubber collar grommet
- rubber hammer
- rubber hood
- rubber piston
- rubber rope
- rubber tire
- rubber-sealed
- rubber-tired drill
- rubber-tired tractor
- rubbing drum
- rubbing mill
- rubbing rope
- rubbish detritus
- rubble drain
- rubidium (vapor) magnetometer
- rugged packed ice cover
- rugged relief
- rugged shock-proof detector
- rugged terrain
- rugged topography
- rugose hole
- rugose section
- rugosity
- rule
- ruling point
- run a line
