Definition of Bacterium. Meaning of Bacterium. Synonyms of Bacterium

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Definition of Bacterium

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Bacterium anthracis
Anthrax vaccine An"thrax vac"cine (Veter.) A fluid vaccine obtained by growing a bacterium (Bacterium anthracis) in beef broth. It is used to immunize animals, esp. cattle.
Bacterium lacticum or lactis
Lactic Lac"tic, a. [L. lac, lactis, milk: cf. F. lactique. See Lacteal, and cf. Galactic.] (Physiol. Chem.) Of or pertaining to milk; procured from sour milk or whey; as, lactic acid; lactic fermentation, etc. Lactic acid (Physiol. Chem.), a sirupy, colorless fluid, soluble in water, with an intensely sour taste and strong acid reaction. There are at least three isomeric modifications all having the formula C3H6O3. Sarcolactic or paralactic acid occurs chiefly in dead muscle tissue, while ordinary lactic acid results from fermentation. The two acids are alike in having the same constitution (expressed by the name ethylidene lactic acid), but the latter is optically inactive, while sarcolactic acid rotates the plane of polarization to the right. The third acid, ethylene lactic acid, accompanies sarcolactic acid in the juice of flesh, and is optically inactive. Lactic ferment, an organized ferment (Bacterium lacticum or lactis), which produces lactic fermentation, decomposing the sugar of milk into carbonic and lactic acids, the latter, of which renders the milk sour, and precipitates the casein, thus giving rise to the so-called spontaneous coagulation of milk. Lactic fermentation. See under Fermentation.
Bacterium lactis
Zymogenic ym`o*gen"ic, a. (Biol.) (a) Pertaining to, or formed by, a zymogene. (b) Capable of producing a definite zymogen or ferment. Zymogenic organism (Biol.), a micro["o]rganism, such as the yeast plant of the Bacterium lactis, which sets up certain fermentative processes by which definite chemical products are formed; -- distinguished from a pathogenic organism. Cf. Micrococcus.
Bacterium lactis
2. A state of agitation or excitement, as of the intellect or the feelings. It puts the soul to fermentation and activity. --Jer. Taylor. A univesal fermentation of human thought and faith. --C. Kingsley. Acetous, or Acetic, fermentation, a form of oxidation in which alcohol is converted into vinegar or acetic acid by the agency of a specific fungus or ferment (Mycoderma aceti). The process involves two distinct reactions, in which the oxygen of the air is essential. An intermediate product, aldehyde, is formed in the first process. 1. C2H6O + O = H2O + C2H4O Note: Alcohol. Water. Aldehyde. 2. C2H4O + O = C2H4O2 Note: Aldehyde. Acetic acid. Alcoholic fermentation, the fermentation which saccharine bodies undergo when brought in contact with the yeast plant or Torula. The sugar is converted, either directly or indirectly, into alcohol and carbonic acid, the rate of action being dependent on the rapidity with which the Torul[ae] develop. Ammoniacal fermentation, the conversion of the urea of the urine into ammonium carbonate, through the growth of the special urea ferment. CON2H4 + 2H2O = (NH4)2CO3 Note: Urea. Water. Ammonium carbonate. Note: Whenever urine is exposed to the air in open vessels for several days it undergoes this alkaline fermentation. Butyric fermentation, the decomposition of various forms of organic matter, through the agency of a peculiar worm-shaped vibrio, with formation of more or less butyric acid. It is one of the many forms of fermentation that collectively constitute putrefaction. See Lactic fermentation. Fermentation by an unorganized ferment or enzyme. Fermentations of this class are purely chemical reactions, in which the ferment acts as a simple catalytic agent. Of this nature are the decomposition or inversion of cane sugar into levulose and dextrose by boiling with dilute acids, the conversion of starch into dextrin and sugar by similar treatment, the conversion of starch into like products by the action of diastase of malt or ptyalin of saliva, the conversion of albuminous food into peptones and other like products by the action of pepsin-hydrochloric acid of the gastric juice or by the ferment of the pancreatic juice. Fermentation theory of disease (Biol. & Med.), the theory that most if not all, infectious or zymotic disease are caused by the introduction into the organism of the living germs of ferments, or ferments already developed (organized ferments), by which processes of fermentation are set up injurious to health. See Germ theory. Glycerin fermentation, the fermentation which occurs on mixing a dilute solution of glycerin with a peculiar species of schizomycetes and some carbonate of lime, and other matter favorable to the growth of the plant, the glycerin being changed into butyric acid, caproic acid, butyl, and ethyl alcohol. With another form of bacterium (Bacillus subtilis) ethyl alcohol and butyric acid are mainly formed. Lactic fermentation, the transformation of milk sugar or other saccharine body into lactic acid, as in the souring of milk, through the agency of a special bacterium (Bacterium lactis of Lister). In this change the milk sugar, before assuming the form of lactic acid, presumably passes through the stage of glucose. C12H22O11.H2O = 4C3H6O3 Note: Hydrated milk sugar. Lactic acid. Note: In the lactic fermentation of dextrose or glucose, the lactic acid which is formed is very prone to undergo butyric fermentation after the manner indicated in the following equation: 2C3H6O3 (lactic acid) = C4H8O2 (butyric acid) + 2CO2 (carbonic acid) + 2H2 (hydrogen gas). Putrefactive fermentation. See Putrefaction.
Bacterium ureae
Urea U"re*a, a. [NL. See Urine.] (Physiol. Chem.) A very soluble crystalline body which is the chief constituent of the urine in mammals and some other animals. It is also present in small quantity in blood, serous fluids, lymph, the liver, etc. Note: It is the main product of the regressive metamorphosis (katabolism) of proteid matter in the body, and is excreted daily to the amount of about 500 grains by a man of average weight. Chemically it is carbamide, CO(NH2)2, and when heated with strong acids or alkalies is decomposed into carbonic acid and ammonia. It unites with acids to form salts, as nitrate of urea, and it can be made synthetically from ammonium cyanate, with which it is isomeric. Urea ferment, a soluble ferment formed by certain bacteria, which, however, yield the ferment from the body of their cells only after they have been killed by alcohol. It causes urea to take up water and decompose into carbonic acid and ammonia. Many different bacteria possess this property, especially Bacterium ure[ae] and Micrococcus ure[ae], which are found abundantly in urines undergoing alkaline fermentation.
Coccobacterium
Coccobacterium Coc`co*bac*te"ri*um, n.; pl. Coccobacteria. [NL., fr. Gr. ? a grain + NL. bacterium. So called from its round shape.] (Biol.) One of the round variety of bacteria, a vegetable organism, generally less than a thousandth of a millimeter in diameter.
Spherobacterium
Spherobacteria Sphe`ro*bac*te"ri*a, n. pl.; sing. Spherobacterium. [NL. See Sphere, and Bacterium.] (Biol.) See the Note under Microbacteria.
Spirobacterium
Spirobacteria Spi`ro*bac*te"ri*a, n. pl.; sing. Spirobacterium. [NL. See 4th Spire, and Bacterium.] (Biol.) See the Note under Microbacteria.

Meaning of Bacterium from wikipedia

- Bacteria (/bækˈtɪəriə/ ; sg.: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large...
- KOH-lye) is a gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus Escherichia that is commonly found in the lower intestine...
- Bacterium was a taxon described in 1828 by Christian Gottfried Ehrenberg. The type species was later changed from Bacterium triloculare to Bacterium coli...
- Deinococcus radiodurans is a bacterium, an extremophile and one of the most radiation-resistant organisms known. It can survive cold, dehydration, vacuum...
- and drying surfaces after use can also prevent the establishment of the bacterium by removing its food source and making the environment less hospitable...
- a genus of gram-positive to gram-variable, aerobic, catalase-positive bacterium in the Actinomycetota, closely related to the Rhodococcus, Mycobacterium...
- in which exogenous genetic material p****es from a donor bacterium to a recipient bacterium, the other two processes being conjugation (transfer of genetic...
- as the clap, is a ****ually transmitted infection (STI) caused by the bacterium Neisseria gonorrhoeae. Infection may involve the genitals, mouth, or ****...
- formerly Pasteurella pestis) is a gram-negative, non-motile, coccobacillus bacterium without spores. It is related to pathogens Yersinia enterocolitica, and...
- those who have been vaccinated, but symptoms are typically milder. The bacterium Bordetella pertussis causes pertussis, which is spread easily through...