1. One quadrillion (10^15)

Encyclopedia: Peta-

• gas-turbine ship
• gasbag
• Gascogne
• Gascon
• gasconade
• Gascony
• gaseous
• gaseous nebula
• gaseous state
• gaseousness
• gasfield
• gash
• Gasherbrum
• gasification
• gasified
• gasify
• Gaskell
• gasket
• gaskin
• gaslight
• gasman
• gasmask
• gasohol
• gasolene
• gasoline