bacterium

EnglishEdit

 
3D diagram of a bacterium
 
Shapes of bacteria

EtymologyEdit

From New Latin bactērium, from Ancient Greek βακτήριον (baktḗrion, small staff), from βακτηρία (baktēría).

PronunciationEdit

  • IPA(key): /bækˈtɪəɹ.ɪəm/
  • (file)

NounEdit

bacterium (plural bacteria or bacteriums)

  1. (microbiology) A single-celled organism with cell walls but no nucleus or organelles.
    • 2013 July 20, “Welcome to the plastisphere”, in The Economist, volume 408, number 8845:
      Plastics are energy-rich substances, which is why many of them burn so readily. Any organism that could unlock and use that energy would do well in the Anthropocene. Terrestrial bacteria and fungi which can manage this trick are already familiar to experts in the field.

Usage notesEdit

  • In most formal writing, bacterium is the singular form of the noun, and bacteria the plural form. This is in accord with the word's Latin etymology. However, in ordinary speech, some speakers use bacteria as a singular, with plural either bacteria or bacterias. This is usually considered nonstandard.

HypernymsEdit

HyponymsEdit

Derived termsEdit

TranslationsEdit

The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout § Translations.

Further readingEdit

See alsoEdit


LatinEdit

 
Latin Wikipedia has an article on:
Wikipedia la

EtymologyEdit

From Ancient Greek βακτήριον (baktḗrion, small staff), from βακτηρία (baktēría).

PronunciationEdit

NounEdit

bactērium n (genitive bactēriī); second declension

  1. (New Latin, microbiology) bacterium

DeclensionEdit

Second-declension noun (neuter).

Case Singular Plural
Nominative bactērium bactēria
Genitive bactēriī bactēriōrum
Dative bactēriō bactēriīs
Accusative bactērium bactēria
Ablative bactēriō bactēriīs
Vocative bactērium bactēria

ReferencesEdit