Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
byzantinism is a noun meaning "the doctrine that the state is supreme over the church in ecclesiastical matters". It carries one recorded sense.
the doctrine that the state is supreme over the church in ecclesiastical matters
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for byzantinism come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.