- reduction to cartesian form (mathematics)
- round robin
- renal lobe
- rapture
- renal colic
- renal failure
- repetitively
- relating or belonging to
- relief valve
- rat chinchilla
- renal plexus
- renal segment
- rattle away
- retrain
- reamer
- raise hand against
- rooster
- reprehend
- rimmed
- react against
- ridged gourd
- regally
- rancorously secretive
- reperusal
- remarry
- release of funds
- resource management
- resent
- retentates
- retrogradation
- red incrustation on iron (used as medicine)
- rowan
- reply and counter reply
- renowned throughout the whole world
- raise eyebrows
- random
- redirect
- rationale behind a thing
- registry office
- rhamnus cathartica
- root canal
- re_enlargement
- republican system of government
- record strip
- royal throne
- ropedancer
- ropy solution
- randomization
- restaurant car
- rouleaux of blood corpuscle