pro·te·o·bac·te·ri·um 
(prō′tē-ō-băk-tîrē-əm)
(prō′tē-ō-băk-tîrē-əm)n. pl. pro·te·o·bac·te·ri·a (-tîrē-ə)
Any of numerous gram-negative bacteria of the phylum Proteobacteria, including E. coli, the agrobacteria, many nitrogen-fixing bacteria, and many pathogens, such as salmonella.
[New Latin prōteobactērium, back-formed singular of Prōteobactēria, phylum name : Greek Prōteus, Proteus (the great morphological, metabolic, and ecological diversity of the phylum being likened to the god's shape-shifting powers) + New Latin bactērium, bacterium; see BACTERIUM.]
- first lieutenant
- first-line
- firstling
- firstly
- first mate
- first name
- First Nation
- First Nations
- first night
- first off
- first offender
- first off/thing
- first person
- first-person
- first quantum number
- first quarter moon
- first-rate
- first responder
- first run
- first-run
- first sergeant
- first strike
- first-strike
- first string
- first-string