[ˌʌɪdɪˈɒlədʒi], (Noun)

Definitions:
- a system of ideas and ideals, especially one which forms the basis of economic or political theory and policy
(e.g: the ideology of democracy)

- the science of ideas; the study of their origin and nature


Phrases:

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