methaemoglobinmethemoglobinn.

Brit.

/ˌmɛthiːməˈɡləʊbɪn/,

/ˌmɛθiːməˈɡləʊbɪn/, U.S.

/ˌmɛthiməˈɡloʊb(ə)n/

Forms: 1800s– methaemoglobin, 1800s– methemoglobin (chiefly U.S.).

Origin: Formed within English, by derivation; modelled on a German lexical item. Etymons: meta- prefix, haemoglobin n.

Etymology: < meta- prefix + haemoglobin n., after German Methämoglobin (F. Hoppe-Seyler Handb. der physiol.- u. pathol.-chem. Analyse (1865) iii. 205).Hoppe-Seyler described methaemoglobin in Arch. f. pathol. Anat. u. Physiol. (1862) 23 446–9, but did not name it in this paper. The pronunciations with /t/ rather than /θ/, as well as reflecting the German pronunciation, perhaps owe their predominance to a desire to distinguish clearly between this name and the numerous chemical names formed with meth- meth- comb. form.

Biochemistry.

Any form of haemoglobin in which the iron of the haem groups is in the ferric (Fe³⁺) rather than the ferrous (Fe²⁺) state, and so is unable to bind and release oxygen. Also called ferrihaemoglobin.

ΘΚΠ

the world > life > the body > vascular system > blood > components of blood > blood corpuscle or plate > [noun] > red cells or corpuscles > haemoglobin > forms or parts of

globulin1831

haematosin1834

haemato-crystallin1865

oxyhaemoglobin1869

methaemoglobin1870

globin1872

haematogen1890

methaemoglobulin1890

haemagglutinin1904

haem1925

hypertensinogen1941

angiotensinogen1958

1870 Nature 27 Oct. 528/1 No separation of an albumen accompanies the change of hæmoglobin into methæmoglobin.

1890 J. Cagney tr. R. von Jaksch Clin. Diagnosis i. 38 Methæmoglobin in acid solution.

1923 Nature 19 May 666/1 There is also the problem of methaemoglobin, another compound of haemoglobin and oxygen, but one which does not give up its oxygen to a vacuum.

1955 F. G. Ashbrook Butchering xii. 199 Meat owes its red color to hemoglobin..[which] oxidizes to brown methemoglobin.

1984 M. J. Taussig Processes in Pathol. & Microbiol. (ed. 2) vii. 864 If the iron is permanently oxidised to Fe³⁺ it cannot bind or release oxygen, and the molecule is called methaemoglobin.

1984 M. J. Taussig Processes in Pathol. & Microbiol. (ed. 2) vii. 864 Methaemoglobins produced in this way are called M haemoglobins.

1996 Proc. National Acad. Sci. U.S.A. 93 10397/1 In cultured endothelial cells, methemoglobin..increases ferritin production.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online June 2022).

单词	methaemoglobin
释义	methaemoglobinmethemoglobinn. Brit. /ˌmɛthiːməˈɡləʊbɪn/, /ˌmɛθiːməˈɡləʊbɪn/, U.S. /ˌmɛthiməˈɡloʊb(ə)n/ Forms: 1800s– methaemoglobin, 1800s– methemoglobin (chiefly U.S.). Origin: Formed within English, by derivation; modelled on a German lexical item. Etymons: meta- prefix, haemoglobin n. Etymology: < meta- prefix + haemoglobin n., after German Methämoglobin (F. Hoppe-Seyler Handb. der physiol.- u. pathol.-chem. Analyse (1865) iii. 205).Hoppe-Seyler described methaemoglobin in Arch. f. pathol. Anat. u. Physiol. (1862) 23 446–9, but did not name it in this paper. The pronunciations with /t/ rather than /θ/, as well as reflecting the German pronunciation, perhaps owe their predominance to a desire to distinguish clearly between this name and the numerous chemical names formed with meth- meth- comb. form. Biochemistry. Any form of haemoglobin in which the iron of the haem groups is in the ferric (Fe³⁺) rather than the ferrous (Fe²⁺) state, and so is unable to bind and release oxygen. Also called ferrihaemoglobin. ΘΚΠ the world > life > the body > vascular system > blood > components of blood > blood corpuscle or plate > [noun] > red cells or corpuscles > haemoglobin > forms or parts of globulin1831 haematosin1834 haemato-crystallin1865 oxyhaemoglobin1869 methaemoglobin1870 globin1872 haematogen1890 methaemoglobulin1890 haemagglutinin1904 haem1925 hypertensinogen1941 angiotensinogen1958 1870 Nature 27 Oct. 528/1 No separation of an albumen accompanies the change of hæmoglobin into methæmoglobin. 1890 J. Cagney tr. R. von Jaksch Clin. Diagnosis i. 38 Methæmoglobin in acid solution. 1923 Nature 19 May 666/1 There is also the problem of methaemoglobin, another compound of haemoglobin and oxygen, but one which does not give up its oxygen to a vacuum. 1955 F. G. Ashbrook Butchering xii. 199 Meat owes its red color to hemoglobin..[which] oxidizes to brown methemoglobin. 1984 M. J. Taussig Processes in Pathol. & Microbiol. (ed. 2) vii. 864 If the iron is permanently oxidised to Fe³⁺ it cannot bind or release oxygen, and the molecule is called methaemoglobin. 1984 M. J. Taussig Processes in Pathol. & Microbiol. (ed. 2) vii. 864 Methaemoglobins produced in this way are called M haemoglobins. 1996 Proc. National Acad. Sci. U.S.A. 93 10397/1 In cultured endothelial cells, methemoglobin..increases ferritin production. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online June 2022). < n.1870
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