Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
supernal is an adjective meaning "being or coming from on high". It carries 2 recorded senses.
being or coming from on high
“interpret the plague as a visitation from heaven, a supernal punishment for the sins of men”
Definitions, synonyms and semantic relations for supernal come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.