Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
quadraphonic is an adjective meaning "of or relating to quadraphony". It carries one recorded sense.
of or relating to quadraphony
“his quadraphonic sound system”
Definitions, synonyms and semantic relations for quadraphonic come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.