refr - reto
- refracted wave
- refracting medium
- refraction
- refraction correlation method
- refraction method
- refraction of cleavage
- refraction survey
- refractive index
- refractivity
- refractometer
- refractoriness
- refractory
- refractory brick
- refractory clay
- refractory material
- refractory sand
- refrigeration
- refuse
- refusion
- regelation
- regenerated deposit
- regenerated glacier
- regeneration
- regeneration theory
- regenerative amplification
- regime of river
- region
- regional
- regional geochemistry
- regional geological reconnaissance
- regional geology
- regional geomorphology
- regional gravity anomaly
- regional isostatic anomaly
- regional metamorphism
- regional remote sensing
- regional unconformity
- registration
- registration paper
- regma
