1. Of or related to an amphitheatre
   - amphitheatrical

See also: amphitheater [US]

• prothetic
• prothonotary
• prothorax
• prothrombin
• prothrombin accelerator
• prothrombinase
• protirelin
• protist
• Protista
• protistan
• Protium
• Protium guianense
• Protium heptaphyllum
• proto
• Proto-Indo European
• Proto-Norse
• proto-oncogene
• protoactinium
• protoanthropology
• protoarchaeology
• protoarcheology
• protoavis
• protoceratops
• protocol
• protoctist