Webster 1913 Edition
- In the three-domain system, a taxonomic domain comprising the single kingdom also called Bacteria, containing about 25 phyla.
- In the two-empire system (or two-superkingdom system), A taxonomic kingdom within the superkingdom Prokaryota – single-cell organisms (the bacteria); once divided into the Archaebacteria and Eubacteria.
- (kingdom): Eubacteria
- (kingdom): Negibacteria, Posibacteria - subkingdoms
- Acidobacteria, Aquificae, Armatimonadetes, Bacteroidetes, Caldiserica, Chlamydiae, Chlorobi, Chrysiogenetes, Cyanobacteria, Deferribacteres, Deinococcus-Thermus, Dictyoglomi, Elusimicrobia, Fibrobacteres, Fusobacteria, Gemmatimonadetes, Lentisphaerae, Nitrospira, Planctomycetes, Proteobacteria, Spirochaetae, Synergistetes, Thermodesulfobacteria, Thermotogae, Verrucomicrobia - phyla in Negibacteria
- Actinobacteria, Chloroflexi, Firmicutes, Tenericutes - phyla in Posibacteria
- 1 2 3 Ruggiero MA, Gordon DP, Orrell TM, Bailly N, Bourgoin T, Brusca RC, et al. (2015) A Higher Level Classification of All Living Organisms. PLoS ONE 10(4): e0119248. doi: 10.1371/journal.pone.0119248. pmid:25923521
- plural of bacterium
- (US) A type, species, or strain of bacterium.
- 2002, A.C. Panchdhari, Water Supply and Sanitary Installations, 2nd ed. edition, ISBN 8122412254, page 177:
- Anaerobic bacteria function in the absence of oxygen, where as aerobic bacteria require sunlight and also oxygen. Both these bacterias are capable of breaking down the organic matter […]
- (US, proscribed) Alternative form of bacterium.
- (pejorative, slang) A derisive term for a lowlife or a slob (could be treated as plural or singular).
- This is the plural form of the word. While it is often used as if it were singular (as a collective noun), this is considered nonstandard by some in the US and more elsewhere. See the usage examples under bacterium.
see also under bacterium
- culture (collective noun)
From New Latin bacteria, from Ancient Greek βακτηρία (baktēría, “rod, stick”).
bacteria (plural bacteriae)
- (dated, medicine) An oval bacterium, as distinguished from a spherical coccus or rod-shaped bacillus.