-par·​tism | \¦pär|ˌtizəm, ¦pȧ| also |tˌizəm\
plural -s

Definition of -partism 

: tendency toward or active operation of a (specified) number of political parties in a governmental system multi-partism

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History and Etymology for -partism

French -partisme, from parti political party (from Middle French, match, party, decision) + -isme

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to enclose within walls

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