- ubiquitous one-celled organisms, spherical, spiral, or rod-shaped and appearing singly or in chains, comprising the Schizomycota, a phylum of the kingdom Monera (in some classification systems the plant class Schizomycetes), various species of which are involved in fermentation, putrefaction, infectious diseases, or nitrogen fixation.
Origin of bacteria
Examples from the Web for bacterial
After their split, Jim Friel died shockingly at age 48 of bacterial meningitis.Can This SVU Crime Fighter Save the NFL?
September 26, 2014
However, once participants stopped pulling oil, bacterial counts began to increase.Oil Pulling: Miracle Cure or Oily Mess?
March 28, 2014
Bacterial pathogens include gonorrhea (yes) which can cause blindness in a matter of hours, and chlamydia.Everything You Wanted To Know About Bob Costas’s Olympic Pinkeye
February 12, 2014
Particular scientific interest has been focused on bacterial (and other microbial) diversity in our intestines.Buy That Breast Milk!
October 22, 2013
Or that bacterial genetic fragments somehow persisted in the brain?Scientists Find Bacteria Where It Isn’t Supposed to Be: The Brain
March 17, 2013
Let's play safe and remove all forms of life, bacterial and otherwise.Islands of Space
John W Campbell
What effect does cooking have upon the bacterial flora of foods?Human Foods and Their Nutritive Value
At the end of three weeks it is equally innocent of bacterial life.Fragments of science, V. 1-2
How far chemical and bacterial agencies have also been effective is not clear.The Economic Aspect of Geology
C. K. Leith
In these cases, they found a bacterial catarrh of the eyes and nose.The Treatment of Hay Fever
George Frederick Laidlaw
- a very large group of microorganisms comprising one of the three domains of living organisms. They are prokaryotic, unicellular, and either free-living in soil or water or parasites of plants or animalsSee also prokaryote
Word Origin and History for bacterial
1847, plural of Modern Latin bacterium, from Greek bakterion "small staff," diminutive of baktron "stick, rod," from PIE *bak- "staff used for support." So called because the first ones observed were rod-shaped. Introduced as a scientific word 1838 by German naturalist Christian Gottfried Ehrenberg (1795-1876).
- Plural ofbacterium
- Any of a large group of one-celled organisms that lack a cell nucleus, reproduce by fission or by forming spores, and in some cases cause disease. They are the most abundant lifeforms on Earth, and are found in all living things and in all of the Earth's environments. Bacteria usually live off other organisms. Bacteria make up most of the kingdom of prokaryotes (Monera or Prokaryota), with one group (the archaea) sometimes classified as a separate kingdom. See also archaeon prokaryote.
Usage: It is important to remember that bacteria is the plural of bacterium, and that saying a bacteria is incorrect. It is correct to say The soil sample contains millions of bacteria, and Tetanus is caused by a bacterium.
- Plural of bacterium.