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