1. Having a latticelike structure pierced with holes or windows
   - cancellated, clathrate 
2. Having an open or latticed or porous structure
   - cancellated, cancellous

See also: cellular, reticular, reticulate

• 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