Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
actinal is an adjective meaning "(of radiate organisms) located on the surface or end on which the mouth is situated". It carries one recorded sense.
(of radiate organisms) located on the surface or end on which the mouth is situated
organism
Definitions, synonyms and semantic relations for actinal come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.