Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
quadrasonic 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 quadrasonic come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.