- retroflexion
- retrogradation
- retrograde
- retrograde condensate
- retrograde condensation
- retrograde intussusception
- retrograde metamorphism
- retrograde motion
- retrograde orbit
- retrograding shoreline
- retrogress
- retrogression
- retrogressive
- retrogressive contact
- retrogressive erosion
- retrogressive metamorphism
- retrogressive motion
- retrogressive sliding
- retrogressively
- retroinsular
- retroiridian
- retroject
- retrojection
- retrolingual
- retromammary abscess
- retromandibular
- retromastoid
- retromolar pad
- retromorphosis
- retronasal
- retroocular
- retrooperative
- retropack
- retropatellar
- retroperitoneal
- retroperitoneal space
- retroperitoneum
- retropharingeal
- retropharyngeal
- retropharyngeal abscess
- retropharynx
- retropleural
- retroposition
- retropubic
- retropulsion
- retroreflection
- retrorse
- retrosection
- retrospect
- retrospection
- retrospective
- retrospective information
- retrospectively
- retrospectivestudy
- retrospectivity
- retrostalsis
- retrosymphysial
- retroussé
- retrovaccination
- retroversion
- retroverted
- retrusion
- retry
- retry key
- retsina
- rettery
- retting
- retubing
- retun spring
- retuning
- retunr air
- returfing
- return
- return address
- return air
- return airduct
- return bead
- return bill
- return cable
- return cagrgo
- return call
- return card
- return cargo
- return channel
- return circuit
- return code
- return coefficient
- return commission
- return conductor
- return conduit
- return current
- return cylinder
- return difference
- return discharge
- return envelope
- return fare
- return feed
- return feeder
- return flight
- return flow