bacteria

noun bac·te·ria \ bak-ˈtir-ē-ə \

Definition of bacteria

plural bacteria also bacterias
:bacterium not usually used technically

Is bacteria singular or plural?

Bacteria is regularly a plural in scientific and pedagogical use; in speech and in journalism it is also used as a singular, and it is sometimes pluralized as bacterias.
    • caused by a bacteria borne by certain tiny ticks
    • Wall Street Journal
    • more resistant to chlorine and elevated water temperatures than other bacterias
    • —Allan Bruckheim, M.D.Chicago Tribune
These journalistic uses are found in British as well as American sources.


Recent Examples of bacteria from the Web

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Did You Know?

Microscopic single-celled organisms lacking a distinct nucleus are known as bacteria. They may be shaped like spheres, rods, or spirals. They inhabit virtually all environments, including soil, water, organic matter, and the bodies of animals. Many bacteria swim by means of long whip-like structures called flagella. The DNA of most bacteria is found in a single, circular chromosome, and is distributed throughout the cytoplasm rather than contained within a membrane-enclosed nucleus. Though some bacteria can cause food poisoning and infectious diseases in humans, most are harmless and many are beneficial. They are used in various industrial processes, especially in the food industry (for example, in the production of yogurt, cheeses, and pickles).

Origin and Etymology of bacteria

plural of bacterium

Other Microbiology Terms


Medical Dictionary

1

bacteria

medical Definition of bacteria


2

bacteria

noun bac·te·ria \ bak-ˈtir-ē-ə \

medical Definition of bacteria

1 :bacterium not usually used technically
  • caused by a bacteria borne by certain tiny ticks
  • Wall Street Journal
  • a single bacteria—there are roughly 200 in each cough—apparently can infect a person
  • —Cheryl Clark
2 plural capitalized :a domain in the system of classification dividing all organisms into three major domains of life that includes the prokaryotes that are bacteria but not those that are archaebacteria or archaea — compare eubacteria


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