What is the process that converts carbon dioxide into oxygen called?

Question

What is the process that converts carbon dioxide into oxygen called?

Answer 1

The process is photosynthesis.  Oxygen is the byproduct of the plant using carbon dioxide along with water and the energy from sunlight to produce sugar.

Answer 2

The process that uses carbon dioxide and water and energy from the sun to make glucose and oxygen gas is called photosynthesis.

Note: carbon dioxide, CO2, is not converted into oxygen, but the whole process does what you ask.