1. The study humans prior to the invention of writing
   - protohistory

Type of: archaeology, archeology [US]

• investment
• investment adviser
• investment advisor
• investment banker
• investment company
• investment firm
• investment funds
• investment letter
• investment trust
• investor
• investors club
• inveteracy
• inveterate
• inviable
• invidia
• invidious
• invidiously
• invidiousness
• invigilate
• invigilation
• invigilator
• invigorate
• invigorated
• invigorating
• invigoration