- rosary
- roscherite
- rose
- rose attar
- rose countersink
- rose curve
- rose cutter
- rose mill
- rose oil
- rose olid
- rose window
- rose wood
- rose-apple
- rose-bay
- rose-bud
- rose-bush
- rose-colour
- rose-coloured
- rose-cut
- rose-diamond
- rose-drop
- rose-hip
- rose-house
- rose-leaf
- rose-lipped
- rose-mallow
- rose-rash
- rose-red
- rose-scented
- rose-tree
- rose-water
- roseate
- rosebay
- rosebud
- rosefish
- rosemary
- rosenbuschite
- roseola
- roseola febrilis
- roseola typhosa
- roseola vaccinia
- roseolar
- rosette
- rosewood
- rosickyite
- rosieresite
- rosily
- rosin
- rosin grease
- rosin jack
- rosin milk
- rosin oil
- rosin pitch
- rosin spirit
- rosiness
- rosiny
- rossing
- rostella
- rostellar
- rostellate
- rostellum
- roster
- roster irrigation
- rosthornite
- rostra
- rostral
- rostral column
- rostrat
- rostrate
- rostrated
- rostriform
- rostrum
- rosular
- rosy
- rot
- rot pocket
- rot protection
- rot-gut
- rota
- rotable nozzle
- rotafactor
- rotameter
- rotary
- rotary amplifier
- rotary armature
- rotary beam
- rotary bearing
- rotary bit
- rotary blower
- rotary boiler
- rotary booster
- rotary boring
- rotary breaker
- rotary brush
- rotary brusher
- rotary bushing
- rotary capacitor
- rotary case
- rotary casting
- rotary compressor