Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
evidential is an adjective meaning "serving as or based on evidence". It carries one recorded sense.
serving as or based on evidence
“evidential signs of a forced entry”
“its evidentiary value”
Definitions, synonyms and semantic relations for evidential come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.