extensionalism

== English == === Etymology === From extensional + -ism (suffix forming the names of schools of thought, systems, or theories). === Pronunciation === (Received Pronunciation) IPA(key): /ɪkˈstɛnʃənəlɪz(ə)m/, /ɛk-/ (General American) IPA(key): /ɪkˈstɛn(t)ʃənəˌlɪzəm/, /ˌɛk-/ Hyphenation: ex‧tens‧ion‧al‧i‧sm === Noun === extensionalism (usually uncountable, plural extensionalisms) (philosophy) The belief in extensionality.