- reconfirm
- reiter's syndrome
- root forceps
- rete testis
- restart instruction
- restart condition
- roundup
- roomie
- relay station
- recall dose
- relay link
- rocket engine
- rescriptor
- rescue equipment
- reserve(d)
- roads
- roadstead
- refueling
- right field
- rightfield
- river basin
- roy orbison
- renal pelvis
- reconstitute
- restorer
- reinvigorated
- refreshed
- repercolation
- redound to
- red bay
- Rhamnus carolinianus
- Rhamnus croceus
- Rhamnus frangula
- re_entrant
- real world
- ring finger
- reach into
- rear_end
- round dancing
- remilitarize
- remilitarise
- rough_dry
- riggs' disease
- right !
- right away
- rationalize away
- romanticisation
- rigidify
- relaunch
- reform jew