1. Partly or entirely open to the sky
   - hypethral

See also: unenclosed

• raptly
• raptness
• raptor
• Raptores
• raptorial
• raptorial bird
• rapture
• rapturous
• rapturously
• raptus
• raptus hemorrhagicus
• rara avis
• rare
• rare bird
• rare earth
• rare-earth element
• rare-roasted
• rarebit
• raree-show
• rarefaction
• rarefied
• rarefy
• rarely
• rareness
• rarified