Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
didacticism is a noun meaning "communication that is suitable for or intended to be instructive". It carries one recorded sense.
communication that is suitable for or intended to be instructive
“the didacticism expected in books for the young”
“the didacticism of the 19th century gave birth to many great museums”
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 didacticism come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.