Ideology

1. A set of doctrines or beliefs that are shared by the members of a social group or that form the basis of a political, economic, or other system.

1. The science of ideas or of mind; a name applied by the later disciples of the French philosopher Condillac to the history and evolution of human ideas, considered as so many successive forms or modes of certain original or transformed sensations; that system of mental philosophy which derives knowledge exclusively from sensation.

1. The science of ideas.

An ideology is a set of beliefs or philosophies attributed to a person or group of persons, especially as held for reasons that are not purely epistemic, in which "practical elements are as prominent as theoretical ones." Formerly applied primarily to economic, political, or religious theories and policies, in a tradition to Plato.