ȯˌtäksə̇ˈdāshən, ȯd.ˌäk- noun
also au·to-ox·idation | ̷ ̷ ̷ ̷ at auto- I+ ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷
Etymology: International Scientific Vocabulary aut- + oxidation
: oxidation by direct combination with oxygen (as in air) at ordinary temperatures
the rancidity of fats and oils is caused by autoxidation