bacteriumn.

Brit.

/bakˈtɪərɪəm/, U.S.

/bækˈtɪriəm/

Forms: Plural bacteria; rarely anglicized as bactery.

Etymology: modern Latin, < Greek βακτήριον, diminutive of βάκτρον stick, staff.

1. Any of several types of microscopic or ultramicroscopic single-celled organisms very widely distributed in nature, not only in soil, water, and air, but also on or in many parts of the tissues of plants and animals, and forming one of the main biologically interdependent groups of organisms in virtue of the chemical changes which many of them bring about, e.g. all forms of decay and the building up of nitrogen compounds in the soil.

ΘΚΠ

the world > life > biology > organism > micro-organism > bacterium > [noun]

bacterium1849

microphyte1859

diphtheroid1905

1849–52 Todd's Cycl. Anat. & Physiol. IV. i. 6/1 In Bacterium, the contraction is weaker.

1867 J. Hogg Microscope (ed. 6) ii. i. 295 What part do the fungi, or bacteria, play in the production of..cancer?

1884 Internat. Health Exhib. Official Catal. 155/1 Imperishable Yeast..and Models of Yeast and Bacteries.

1908 Daily Chron. 6 Aug. 6/5 Dr. Stonehouse said it was a bacteria infection.

1911 J. A. Thomson Biol. Seasons ii. 161 Analogous, though not ‘inter-regnal’, is the intimate and most profitable partnership between Bacteria-like microbes and Leguminous plants, like Clover.

1956 Nature 11 Feb. 279/2 This trypanosomid, first isolated in bacteria-free culture by Noguchi and Tilden.

1964 M. Hynes Med. Bacteriol. (ed. 8) iii. 26 The foundation of modern surgery is asepsis—the creation and preservation of a bacterium-free environment.

2. bacteria bed n. a contact bed (see contact n. Compounds 2).

ΘΚΠ

the world > physical sensation > cleanness and dirtiness > sanitation > provision of sewers > sewage treatment > [noun] > apparatus for sewage treatment

septic tank1896

percolating filter1901

contact bed1902

trickling filter1903

bacteria bed1913

sedimentation tank1920

septic1929

comminutor1939

1913 E. H. Blake Drainage & Sanitation xi. 369 This was the origin of the contact method of working bacteria beds—a method adopted with the septic tank.

1936 E. H. Blake Drainage & Sanitation (ed. 5) xi. 428 Such treatment is carried out in what are often called Bacteria Beds. These may be on the intermittent principle, in which case they are called Contact Beds, or on the continuous flow principle, in which case they are called Percolating Filters or Trickling Filters; in either case the cause of purification is aerobic bacteria.

This entry has not yet been fully updated (first published 1885; most recently modified version published online June 2022).

单词	bacterium
释义	bacteriumn. Brit. /bakˈtɪərɪəm/, U.S. /bækˈtɪriəm/ Forms: Plural bacteria; rarely anglicized as bactery. Etymology: modern Latin, < Greek βακτήριον, diminutive of βάκτρον stick, staff. 1. Any of several types of microscopic or ultramicroscopic single-celled organisms very widely distributed in nature, not only in soil, water, and air, but also on or in many parts of the tissues of plants and animals, and forming one of the main biologically interdependent groups of organisms in virtue of the chemical changes which many of them bring about, e.g. all forms of decay and the building up of nitrogen compounds in the soil. ΘΚΠ the world > life > biology > organism > micro-organism > bacterium > [noun] bacterium1849 microphyte1859 diphtheroid1905 1849–52 Todd's Cycl. Anat. & Physiol. IV. i. 6/1 In Bacterium, the contraction is weaker. 1867 J. Hogg Microscope (ed. 6) ii. i. 295 What part do the fungi, or bacteria, play in the production of..cancer? 1884 Internat. Health Exhib. Official Catal. 155/1 Imperishable Yeast..and Models of Yeast and Bacteries. 1908 Daily Chron. 6 Aug. 6/5 Dr. Stonehouse said it was a bacteria infection. 1911 J. A. Thomson Biol. Seasons ii. 161 Analogous, though not ‘inter-regnal’, is the intimate and most profitable partnership between Bacteria-like microbes and Leguminous plants, like Clover. 1956 Nature 11 Feb. 279/2 This trypanosomid, first isolated in bacteria-free culture by Noguchi and Tilden. 1964 M. Hynes Med. Bacteriol. (ed. 8) iii. 26 The foundation of modern surgery is asepsis—the creation and preservation of a bacterium-free environment. 2. bacteria bed n. a contact bed (see contact n. Compounds 2). ΘΚΠ the world > physical sensation > cleanness and dirtiness > sanitation > provision of sewers > sewage treatment > [noun] > apparatus for sewage treatment septic tank1896 percolating filter1901 contact bed1902 trickling filter1903 bacteria bed1913 sedimentation tank1920 septic1929 comminutor1939 1913 E. H. Blake Drainage & Sanitation xi. 369 This was the origin of the contact method of working bacteria beds—a method adopted with the septic tank. 1936 E. H. Blake Drainage & Sanitation (ed. 5) xi. 428 Such treatment is carried out in what are often called Bacteria Beds. These may be on the intermittent principle, in which case they are called Contact Beds, or on the continuous flow principle, in which case they are called Percolating Filters or Trickling Filters; in either case the cause of purification is aerobic bacteria. This entry has not yet been fully updated (first published 1885; most recently modified version published online June 2022). < n.1849
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