[ ˌsʌɪənəʊbak'tɪərɪə ]
■ plural noun ( sing. cyanobacterium ) Biology microorganisms of a division (Cyanobacteria) comprising the blue-green algae, related to bacteria but capable of photosynthesis.
Derivatives
~l adjective
Origin
mod. L., from Gk kuaneos 'dark blue' + bacterium .