Below are the words that matched your query...
Rh-Positive
- of persons (or their blood) having the Rh factor present in their red blood cells
Rh-Negative
- of persons (or their blood) lacking the Rh factor present in their red blood cells
Radial-Ply
- of or relating to automobile tires that have a strip under the tread and relatively little stiffening in the sidewalls; "radial-ply tires"
Radiological
- of or relating to radiology
Radiotelephonic
- relating to or by means of radiotelephony
Radiophonic
- relating to or by means of radiotelephony
Rationalistic
- of or relating to the philosophical doctrine of rationalism
Real-Time
- of or relating to computer systems that update information at the same rate they receive information
Recoilless
- of or being a weapon that is designed to minimize recoil
Recombinant
- of or relating to recombinant DNA
- a cell or organism in which genetic recombination has occurred