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