retr - salp
- retract
- retraction
- retractor
- retransfusion
- retro-placental
- retrobular
- retrobulbar
- retroclusion
- retroflexed
- retroflexion
- retrograde
- retrograde menstruation
- retrograde urography
- retrogress
- retrogression
- retromammary
- retromammary abscess
- retromammary mastitis
- retroperitonitis
- retropubic space
- retrospective
- retrospective diagnosis
- retrospectively
- retrospondylolisthesis
- retrosternal
- retrouterine
- retroversion
- retroverted
- revaccination
- revealing
- reverbarate
- reversal
- reversal of toxycity
- reverse hemolytic plaque assay
- reversed-phase chromatography
- reversible biotinylation
- reversible changes
- reversible sterility
- rh
- rh antigen
