“Distortion” is usually pronounced dih-STOR-shun in English, with the US version sounding like dih-STOR-shən. For Pokémon context, people generally say it the same way when referring to the Distortion World.

If you want the quick phonetic guide:

  • UK: /dɪˈstɔː.ʃən/
  • US: /dɪˈstɔːr.ʃən/

So if you’re saying “Distortion World,” it’s basically dih-STOR-shun world.