1. The science which treats of the precipitation of rain, snow, etc

Derived forms: hyetologies

• Roquefort
• Roquefort dressing
• roquelaure
• roquet
• roquette
• roridula
• Roridulaceae
• Rorippa
• Rorippa amphibia
• Rorippa islandica
• Rorippa nasturtium-aquaticum
• rorqual
• Rorschach
• Rorschach test
• rort
• Rosa
• Rosa banksia
• Rosa canina
• Rosa chinensis
• Rosa damascena
• Rosa eglanteria
• Rosa laevigata
• Rosa Melba Ponselle
• Rosa moschata
• Rosa multiflora