Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
boreal is an adjective meaning "relating to or marked by qualities associated with the north wind". It carries 3 recorded senses.
relating to or marked by qualities associated with the north wind
toward or located in the north
“the boreal signs of the Zodiac”
comprising or throughout far northern regions
Definitions, synonyms and semantic relations for boreal come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.