The best replacement for oxygenation is ventilation.

The best alternatives to oxygenation are rated as following:
★★★★★  ventilation
★★  oxidation
★  perfusion
  aeration
  ecmo

Your alternative for oxygenation is not listed? Suggest!
Speaking about oxygenation, one probably shouldn't forget about ventilation.

Other search terms related to oxygenation and their ratings are:
★★★★★ ventilation
You have in mind a companion for oxygenation and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of oxygenation in all years. Click on graph for more.
oxygenation
ventilation
oxidation