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bacteria

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noun bac·te·ria \bak-ˈtir-ē-ə\

Definition of bacteria

plural

bacteria

also

bacterias

  1. :  bacterium —not usually used technically



Usage Discussion of bacteria

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.

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


First Known Use: 1881

Other Microbiology Terms


Medical Dictionary

1

bacteria

bac·te·ria

Medical Definition of bacteria

plural of bacterium


2

bacteria

play
noun bac·te·ria \bak-ˈtir-ē-ə\

Medical Definition of bacteria

  1. 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. 2plural 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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