1. In the Christian era; used before dates after the supposed year Christ was born
   - AD, A.D., year of our Lord

Encyclopedia: Anno Domini

• radiotelephony
• radiotherapist
• radiotherapy
• radiotherapy equipment
• radiothorium
• radish
• radish plant
• radium
• radium therapy
• radius
• radius of curvature
• radius vector
• radix
• radome
• radon
• radula
• Radyera
• Radyera farragei
• raetam
• RAF
• Raffaello Santi
• Raffaello Sanzio
• raffia
• Raffia farinifera
• raffia palm