Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
modernistic is an adjective meaning "relating to a recently developed fashion or style". It carries one recorded sense.
relating to a recently developed fashion or style
“their offices are in a modern skyscraper”
“tables in modernistic designs”
Definitions, synonyms and semantic relations for modernistic come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.