megabacterium

meg·a·bac·te·ri·um

(meg'ă-bak-tē'rē-ŭm),
A bacterium of unusually large size.
Synonym(s): macrobacterium

mega-bacterium

A very large bacterium.

meg·a·bac·te·ri·um

(meg'ă-bak-tēr'ē-ŭm)
A bacterium of unusually large size.