Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
paranasal is an adjective meaning "adjacent to the nasal cavities". It carries one recorded sense.
adjacent to the nasal cavities
“paranasal sinus”
Definitions, synonyms and semantic relations for paranasal come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.