- Radical
- Radical Position
- Radix
- Radix System
- Rahu
- Rapt Motion
- Rapt Parallel
- Rays, Under the
- Reception
- Reception, Mutual
- Recessional Directions
- Rectification
- Recurrence Cycles
- Refranation
- Relative Houses
- Retrograde
- Retrograde Application
- Revolution
- Revolutionary Additives
- Right Ascension
- Right Distance
- Right Sphere
- Rising Sign
- Rising Time of a Planet, How to Approximate the
- Rotation
- Royal Stars
- Ruler
- Rulership, Geographical
- Ruminant Signs
ASTROLABE ENCYCLOPEDIA
