the organization of political affairs into parties; the political system of a state, region, etc.
Two-partyism was never significant in continental politics
Derived forms
partyist
noun
Word origin
[1835–45; party + -ism]This word is first recorded in the period 1835–45. Other words that entered Englishat around the same time include: crosshead, cutaway, ecumenical, grandstand, squeegee-ism is a suffix appearing in loanwords from Greek, where it was used to form action nounsfrom verbs (baptism). On this model, -ism is used as a productive suffix in the formation of nouns denoting action or practice,state or condition, principles, doctrines, a usage or characteristic, devotion oradherence, etc. (criticism; barbarism; Darwinism; despotism; plagiarism; realism; witticism; intellectualism)