1. (pathology) an elevation of the skin filled with serous fluid
   - blister, bleb 
2. The round leaden seal affixed to a papal bull

Derived forms: bullae

Type of: cyst, seal, stamp, vesicle

Encyclopedia: Bulla Bulla, Victoria Bulla, amulet

• OR gate
• or so
• ora
• orach
• orache
• oracle
• Oracle of Apollo
• oracle of Delphi
• oracular
• orad
• Oradexon
• oral
• oral cancer
• oral cavity
• oral communication
• oral contraception
• oral contraceptive
• oral contraceptive pill
• oral contract
• oral exam
• oral examination
• oral fissure
• oral herpes
• oral personality
• oral phase