rege - ridg
- retaining frame
- retaining pin
- retaining plate
- retaining washer
- retarder
- retarding
- retarding action
- retentive bandage
- reticular
- reticulate structure
- reticulated corpuscle
- reticulating colliquation
- reticulocytosis
- reticuloendothelioma
- retinal abiotrophy
- retinogram
- retinographia
- retinoscopy
- retirement community
- retitle
- retract motor
- retractable syringe
- retransfusion
- retriever
- retriperitoneum
- retroauricular
- retrocolic
- retrodisplacement
- retrogasserian
- retrograde beat
- retrograde blood flow
- retrolingual
- retromandibulism
- retromolar pad area
- retroperitoneal
- retroplasia
- retroreflective
- retroreflector
- retrosexual
- retrouterine abscess