Ra-ReRf-Rz
RRa-Re
- R (symbol)
- R/O
- RA
- Race
- Radial
- Radiation
- Radiation therapy
- Radiculopathy
- Radiofrequency ablation
- Radiography
- Radioisotope
- Radiologist
- Radiology
- Radiolucent
- Radiomimetic
- Radiopaque
- Radiotherapy
- Radius
- Raised hemidiaphragm
- Rale
- Ramsay Hunt syndrome
- Ramus
- Random
- Random number table
- Randomized controlled trial
- Range
- Range of motion
- RANTES
- Rape
- Rapid plasma reagin test
- Rash
- Raw egg
- Raynaud's phenomenon
- RBC
- RCT
- RDA
- RDS (respiratory distress syndrome)
- Reabsorption
- Reagent
- Rebound effect
- Recalcitrant
- Recent memory
- Receptor
- Recession of Medial Rectus Muscle
- Recombinant
- Recombinant DNA technology
- Recommended Daily Allowance
- Recommended Dietary Allowance
- Rectal (adjective)
- Rectal bleeding
- Rectocele
- Rectouterine pouch
- Rectum
- Recur
- Recurrence
- Recurrent
- Red blood cell
- Red blood cells
- Red eye
- Reduction division
- Referral
- Reflex
- Reflux
- Refraction
- Refractory
- Regimen
- Regional enteritis
- Regurgitation
- Rehab
- Rehabilitation
- Rehydration
- Reinnervation
- Rejection
- Relapse
- REM sleep
- Remedy
- Remission
- Renal
- Renal calculi
- Renal stone
- rep
- Reproduction
- Reproductive cells
- Reproductive organs, female
- Research, controlled
- Resection
- Reservoir
- Reservoir of infection
- Resident
- Residual
- Resistance
- Resorption
- Respiration
- Respiratory
- Respiratory depression
- Respiratory distress syndrome (RDS)
- Respiratory insufficiency
- Respiratory rate
- Respiratory syncytial virus
- Rest
- Resting phase
- Restless Anal Syndrome
- Restless leg syndrome
- Restless legs
- Resuscitation
- Retina
- Retinoid
- Retinopathy
- Retromingent
- Reuptake
- Reverse transcriptase
RRf-Rz
- RF
- Rh factor
- Rhabdomyolysis
- Rheumatoid arthritis
- Rhinitis
- Rhinoplasty
- Rhinorrhea
- Rhinovirus
- Rhogam
- Rib
- Rib cage
- Ribonucleic acid (RNA)
- Ribonucleoprotein (RNP)
- Rift Valley fever
- Right atrium
- Rigor
- Rigor mortis
- Ringing in the ears
- Ringworm (tinea)
- RIRS (retrograde intrarenal surgery)
- Risk factor
- RLL
- RLQ
- RML
- RNA
- RNA virus
- Robust
- Rock (drug)
- Rod
- Roentgenology
- Rohypnol
- Rosacea
- Rotator cuff
- Round
- Roundworm
- RP
- RPR test
- RSV
- RT
- RT-PCR
- RUL
- Rule out
- Runny nose
- Rupture
- RUQ
- RV (rotavirus)
- RVF
- Rx