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English definition of “ideology”

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noun [C/U]  /ˌɑɪ·diˈɑl·ə·dʒi, ˌɪd·i-/ us  
politics & government a theory or set of beliefs, esp. one on which a political system, party, or organization is based
adjective  /ˌɑɪ·di·əˈlɑdʒ·ɪ·kəl, ˌɪd·i-/ us  
They voted along ideological lines.
adverb /ˌɑɪ·di·əˈlɑdʒ·ɪ·kli, ˌɪd·i-/
(Definition of ideology from the Cambridge Academic Content Dictionary © Cambridge University Press)
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