- rotatory motion
- rotatory nystagmus
- rotatory power
- rotatory spasm
- rote
- rote learning
- rotegut
- rotenone
- rotiform
- rotisserie
- rotoflector
- rotoflex coupling
- rotofreezer
- rotofroster
- rotogravure
- rotogravure printing
- rotor
- rotor aircraft
- rotor arm
- rotor assembly
- rotor axis
- rotor blade
- rotor brake
- rotor cap
- rotor core
- rotor diameter
- rotor dick
- rotor disc
- rotor efficiency
- rotor field
- rotor head
- rotor hub
- rotor inflow
- rotor mast
- rotor overspeed
- rotor plate
- rotor pump
- rotor radius
- rotor shaft
- rotor speed
- rotor spindle
- rotor starter
- rotor stream
- rotor thrust
- rotor torque
- rotor winding
- rotorcraft
- rotortiller
- rototrol
- rotten
- rotten egg
- rotten ice
- rotten lode
- rotten wood
- rottenly
- rottenness
- rottenstone
- rotter
- rotting
- rottweiler
- rotula
- rotular
- rotule
- rotund
- rotunda
- rotundate
- rotundifolious
- rotundity
- rotundly
- roturier
- rouble
- roucou
- rouge
- rougemontite
- rough
- rough adjustment
- rough analysis
- rough approximation
- rough average
- rough board
- rough bolt
- rough book
- rough boring
- rough bottom
- rough brick
- rough calculation
- rough cargo
- rough casting
- rough check
- rough chipping
- rough cider
- rough coal
- rough coat
- rough concrete
- rough copy
- rough cost
- rough cut
- rough cutting
- rough diamond
- rough draft