- regenerative feedback
- regenerative reading
- regenerative read
- regenerative repeater
- radio frequency (rf) synthesizer
- robertson
- radioiodinated
- re elect
- rectal thermometer
- retinal pigment
- reflex ocular fixation
- rectovesical
- reenterable program
- richard roe
- retropubic
- rectourethralis
- read the riot act
- radiolarian
- radiation induced mutation
- revolutionary people's liberation front
- retrobulbar
- remote power off
- reineckate
- retrosternal
- record sleeve
- relative sitting height index
- red_shafted flicker
- retrocalcarine sulcus
- reenterable routine
- retrocolic position
- relative skelic index
- renal tubular transport defect
- retrobulbar haemorrhage
- raster scan
- record description
- reticuloendotheliosis
- re_expansion
- renal infantilism
- renal tubular acidosis
- red_eyed
- reticular layer
- renal threshold
- remote order wire
- recurrent parent
- respiratory center
- right to confront accusors
- relegate
- rectovaginal
- record storage mark
- relapsing