1. The ordinal number of thirty-three in counting order
   - 33rd

See also: ordinal

• 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
• Raffia ruffia
• Raffia taedigera
• Raffia vinifera
• raffinose
• raffish