Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
prejudicious is an adjective meaning "tending to favor preconceived ideas". It carries 2 recorded senses.
tending to favor preconceived ideas
“the presence of discriminatory or prejudicial attitudes in the white population”
(sometimes followed by `to') causing harm or injury
“damaging to career and reputation”
“the reporter's coverage resulted in prejudicial publicity for the defendant”
Definitions, synonyms and semantic relations for prejudicious come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.