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