颅形描记器：描记颅骨外形的仪器- retrospondylolisthesis
- retrostalsis
- retrosternal
- retrosymphysial
- retrouterine
- retroversioflexion
- retroversion
- retroverted
- retrovesical
- retrovirus
- retrusion
- Rett syndrom1
- Retzius' fibers, space(cavity), veins
- Retzius' foramen, lines(striae, stripes)
- Reuss's color charts (tables)
- revaccination
- revascularization
- revellent
- Reverdin's graft,needle
- reversal
- reverse transcriptase
- c
- c'
- C1 INH
- C3b INA