Pseudomonadales

plural noun
Pseu·​dom·​o·​na·​da·​les | \süˌdämənəˈdā(ˌ)lēz, ˌsüdəmänəˈd-\

Definition of Pseudomonadales 

: a large order of spherical, rod-shaped or spiral eubacteria which are usually motile by polar flagella and some of which contain photosynthetic pigments — compare athiorhodaceae , caulobacteraceae , pseudomonadaceae , spirillaceae , thiorhodaceae

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History and Etymology for Pseudomonadales

New Latin, from Pseudomonad-, Pseudomonas + -ales

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