rickettsian.

Brit.

/rᵻˈkɛtsɪə/, U.S.

/rəˈkɛtsiə/

Inflections: Plural rickettsiae, rickettsias.

Origin: A borrowing from Latin. Etymon: Latin Rickettsia.

Etymology: < scientific Latin Rickettsia, genus name (H. da Rocha-Lima 1916, in Berliner klin. Wochenschr. 22 May 567/2) < the name of H. T. Ricketts (1871–1910), United States pathologist, who first described such organisms in 1909 ( Jrnl. Amer. Med. Assoc. 30 Jan. 379) and died of typhus contracted as a result of his research on them + scientific Latin -ia -ia suffix².

Microbiology.

Any of the small Gram-negative bacteria of the genus Rickettsia or, more widely, of the order Rickettsiales, which are intracellular parasites and symbionts of invertebrates and vertebrates, and include the causative agents of a number of human diseases transmitted by lice, fleas, ticks, or mites, including typhus and Rocky Mountain spotted fever; (in form Rickettsia) the genus itself. Frequently attributive.Being obligate intracellular parasites, Rickettsias were formerly regarded as intermediate between viruses and true bacteria. They are now usually placed in the class Alphaproteobacteria.

ΘΚΠ

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

vibrio1850

micrococcus1870

microzyme1870

Spirillum1875

mycothrix1876

leptothrix1877

Spirochaete1877

streptococcus1877

Actinomyces1879

frogspawn1880

schizophyte1880

schizomycetes1881

gonococcus1882

saprophile1882

vibrion1882

coccus1883

diplococcus1883

streptobacteria1883

Clostridium1884

actinomycetes1885

pneumococcus1885

macrococcus1887

staphylococcus1887

iron bacterium1888

Proteus1888

ferrobacterium1890

meningococcus1890

rhizobium1890

sulphobacteria1890

nitrobacterium1891

Streptothrix1891

sulphur bacterium1891

myxobacter1892

Myxococcus1892

tetracoccus1893

coli1894

Pasteurella1895

pyrotoxin1895

Gaertner1897

purple bacterium1897

myxobacterium1898

pseudomonas1899

thiobacteria1900

treponema1908

corynebacterium1909

mycobacterium1909

Salmonella1913

Neisseria1915

botulinum1916

rickettsia1916

leptospira1918

acetobacter1920

Brucella1920

pseudomonad1921

strep1927

enterobacterium1929

opportunist1937

eubacterium1939

agrobacterium1942

persister1944

Moraxella1948

enteric1956

streptomycete1956

leptospire1957

transformant1957

lysogen1958

listeria1961

C. difficile1962

yersinia1967

Campylobacter1971

cyanobacterium1973

coryneform1976

eubacterium1977

legionella1979

acetogen1982

C. diff.1990

acidophilous1996

1916 Arch. Diagnosis 9 381 The blood of typhus beginning with the fourth day of the disease gives rise to the Rickettsia infection.

1918 Trans. Soc. Trop. Med. & Hygiene 11 284 Several writers have also stated that they consider the parasite [of Trench Fever] to belong to that almost mythical genus the Rickettsia, also described as occurring in the louse in Typhus Fever.

1953 R. W. Fairbrother Text-bk. Bacteriol. (ed. 7) xxxiii. 432 These bodies were designated Rickettsia by Da Rocha-Lima (1916) in honour of Ricketts, who first described them in 1909 in cases of Rocky Mountain spotted fever.

1969 Times 3 June 6/2 The trachoma agent is one of a group of tiny organisms called the Rickettsias.

2001 C. Coker Humane Warfare iii. 62 At least seventy types of bacteria, viruses, rickettsiae and fungi can be weaponised.

Derivatives

ricˈkettsia-like adj.

ΚΠ

1921 Jrnl. Pathol. & Bacteriol. 24 294 We find several references to the presence of Rickettsia or Rickettsia-like bodies in the tissues of patients dead of typhus fever.

1960 Jrnl. Parasitol. 46 96 It is..probable that the disease [sc. salmon-poisoning disease] is caused by a rickettsia-like organism transmitted by the fluke.

2002 G. Weismann Year of Genome 20 Rickettsia-like, maternally inherited bacteria have been shown to be involved in a variety of alterations of invertebrate sexuality.

This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).

单词	rickettsia
释义	rickettsian. Brit. /rᵻˈkɛtsɪə/, U.S. /rəˈkɛtsiə/ Inflections: Plural rickettsiae, rickettsias. Origin: A borrowing from Latin. Etymon: Latin Rickettsia. Etymology: < scientific Latin Rickettsia, genus name (H. da Rocha-Lima 1916, in Berliner klin. Wochenschr. 22 May 567/2) < the name of H. T. Ricketts (1871–1910), United States pathologist, who first described such organisms in 1909 ( Jrnl. Amer. Med. Assoc. 30 Jan. 379) and died of typhus contracted as a result of his research on them + scientific Latin -ia -ia suffix². Microbiology. Any of the small Gram-negative bacteria of the genus Rickettsia or, more widely, of the order Rickettsiales, which are intracellular parasites and symbionts of invertebrates and vertebrates, and include the causative agents of a number of human diseases transmitted by lice, fleas, ticks, or mites, including typhus and Rocky Mountain spotted fever; (in form Rickettsia) the genus itself. Frequently attributive.Being obligate intracellular parasites, Rickettsias were formerly regarded as intermediate between viruses and true bacteria. They are now usually placed in the class Alphaproteobacteria. ΘΚΠ the world > life > biology > organism > micro-organism > bacterium > [noun] > types of vibrio1850 micrococcus1870 microzyme1870 Spirillum1875 mycothrix1876 leptothrix1877 Spirochaete1877 streptococcus1877 Actinomyces1879 frogspawn1880 schizophyte1880 schizomycetes1881 gonococcus1882 saprophile1882 vibrion1882 coccus1883 diplococcus1883 streptobacteria1883 Clostridium1884 actinomycetes1885 pneumococcus1885 macrococcus1887 staphylococcus1887 iron bacterium1888 Proteus1888 ferrobacterium1890 meningococcus1890 rhizobium1890 sulphobacteria1890 nitrobacterium1891 Streptothrix1891 sulphur bacterium1891 myxobacter1892 Myxococcus1892 tetracoccus1893 coli1894 Pasteurella1895 pyrotoxin1895 Gaertner1897 purple bacterium1897 myxobacterium1898 pseudomonas1899 thiobacteria1900 treponema1908 corynebacterium1909 mycobacterium1909 Salmonella1913 Neisseria1915 botulinum1916 rickettsia1916 leptospira1918 acetobacter1920 Brucella1920 pseudomonad1921 strep1927 enterobacterium1929 opportunist1937 eubacterium1939 agrobacterium1942 persister1944 Moraxella1948 enteric1956 streptomycete1956 leptospire1957 transformant1957 lysogen1958 listeria1961 C. difficile1962 yersinia1967 Campylobacter1971 cyanobacterium1973 coryneform1976 eubacterium1977 legionella1979 acetogen1982 C. diff.1990 acidophilous1996 1916 Arch. Diagnosis 9 381 The blood of typhus beginning with the fourth day of the disease gives rise to the Rickettsia infection. 1918 Trans. Soc. Trop. Med. & Hygiene 11 284 Several writers have also stated that they consider the parasite [of Trench Fever] to belong to that almost mythical genus the Rickettsia, also described as occurring in the louse in Typhus Fever. 1953 R. W. Fairbrother Text-bk. Bacteriol. (ed. 7) xxxiii. 432 These bodies were designated Rickettsia by Da Rocha-Lima (1916) in honour of Ricketts, who first described them in 1909 in cases of Rocky Mountain spotted fever. 1969 Times 3 June 6/2 The trachoma agent is one of a group of tiny organisms called the Rickettsias. 2001 C. Coker Humane Warfare iii. 62 At least seventy types of bacteria, viruses, rickettsiae and fungi can be weaponised. Derivatives ricˈkettsia-like adj. ΚΠ 1921 Jrnl. Pathol. & Bacteriol. 24 294 We find several references to the presence of Rickettsia or Rickettsia-like bodies in the tissues of patients dead of typhus fever. 1960 Jrnl. Parasitol. 46 96 It is..probable that the disease [sc. salmon-poisoning disease] is caused by a rickettsia-like organism transmitted by the fluke. 2002 G. Weismann Year of Genome 20 Rickettsia-like, maternally inherited bacteria have been shown to be involved in a variety of alterations of invertebrate sexuality. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022). < n.1916
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