Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
authorial is an adjective meaning "of or by or typical of an author". It carries one recorded sense.
of or by or typical of an author
“authorial comments”
“auctorial flights of imagination”
Definitions, synonyms and semantic relations for authorial come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.