source: By John Jabez Edwin Mayal - International Institute of Social History in Amsterdam, Netherlands, Public Domain

noun (plural ideologies)

1. a system of ideas and ideals, especially one which forms the basis of economic or political theory and policy:

観念形態, イデオロギー

e.g. the ideology of republicanism.

the ideas and manner of thinking characteristic of a group, social class, or individual:

e.g. a critique of bourgeois ideology.

2. archaic the science of ideas; the study of their origin and nature.

〘哲〙 観念学

archaic visionary speculation, especially of an unrealistic or idealistic nature.

(非現実的な)抽象的思考, 空論

ideologist |ˌīdēˈäləjəst, ˌidēˈäləjəst| noun

late 18th century (in ideology (sense 2) ): from French idéologie, from Greek idea ‘form, pattern’ + -logos (denoting discourse or compilation).