- redcell surface area
- reduced to black and white
- republic of angola
- rivalry (in love)
- regression coefficient
- raw deal
- recorded delivery
- robert barany
- record_room
- resilient
- resilient stricture
- roomer
- reticulum cell sarcoma
- rouleaux
- reassurance
- retrousse
- resulting
- robert edward lee
- rose louise hovick
- rap session
- rape
- rouded sweet
- roughly speaking
- regional analgesia
- regional perfusion
- regional refrigeration
- regional jejunitis
- rickrack
- ramus
- round bone
- resistance unit
- really!
- realpolitik
- reception (of a guest)
- rye whiskey
- rye whisky
- reeking
- rising titer
- ripply
- row of invitees in a feast
- reticle
- reticulate
- reticular fibre
- reticular fibrosis
- reticular cerabrosidosis
- reticular activating system
- reticular degeneration
- rhumba
- rhumb line
- rock snake