1. A colourless crystalline alkaloid derived from tea leaves or made synthetically; used in medicine as a bronchial dilator
   - theophylline, Elixophyllin, Theobid

Type of: bronchodilator

• royal road
• Royal Society
• Royal Society of London for Improving Natural Knowledge
• royal stag
• royal tennis
• royal velvet plant
• royalism
• royalist
• royally
• royalty
• Roystonea
• Roystonea oleracea
• Roystonea regia
• rozelle
• rozzer
• RP
• intermediate vector boson
• intermediate wheatgrass
• intermediately
• intermediation
• intermediator
• interment
• intermeshed
• intermezzo
• interminable