indeterminism Syllabification: (in·de·ter·min·ism)Pronunciation: /ˌindiˈtərməˌnizəm/Definition of indeterminism noun 1 Philosophy the doctrine that not all events are wholly determined by antecedent causes. 2the state of being uncertain or undecided. Derivatives indeterminist noun indeterministicPronunciation: /-ˌtərməˈnistik/ adjective indeterminism in other Oxford dictionaries Definition of indeterminism in the British & World English dictionary