metachromatismn.

Brit.

/ˌmɛtəˈkrəʊmətɪz(ə)m/, U.S.

/ˌmɛdəˈkroʊməˌtɪz(ə)m/

Origin: Formed within English, by derivation. Etymons: meta- prefix, chromatism n.

Etymology: < meta- prefix + chromatism n.; in later use in sense 1 probably after French métachromatisme (1866 in Littré of the colour of hair, skin, etc.), although in quot. 1876 at sense 1a apparently an independent formation; in sense 2 after German Metachromasie (see metachromasia n.). Compare metachromatic adj., metachrome n., and metachromism n.

1. Science.

†a. Change of colour produced by heating. Obsolete.

ΘΚΠ

the world > matter > colour > change of colour > [noun]

discoloura1398

discolouring?a1425

discolouration1545

discolouredness1585

transcoloration1664

discolourment1762

discolorization1827

metachromatism1876

metachromism1876

metachrosis1887

tinctumutation1895

electrochromism1961

the world > life > biology > biological processes > development, growth, or degeneration > [noun] > change of colour

metachromatism1876

metachromism1876

metachrosis1887

1876 W. Ackroyd in Chem. News 25 Aug. 75/1 Many bodies change colour, when they are heated, without suffering any alteration of chemical composition... We venture, therefore, to propose for the phenomenon the name of Metachromatism.

b. Change of the colour of hair, skin, etc. Now rare.In quot. 1960 = metachrosis n. In quot. 2000 = metachromism n. 2.

ΚΠ

1890 New Sydenham Soc. Lexicon Metachromatism, a change or alteration of colour, as in the hair or feathers, from advance of age.

1960 Ecology 41 207/1 Metachromatism of lizards was one of the problems encountered in this study.

2000 New Scientist 5 Feb. 35/2 His insistence that all animals are progressing relentlessly to an albinistic future was probably enough to put most people off metachromatism.

2. Histology and Biology. = metachromasia n.

ΘΚΠ

the world > life > biology > substance > staining quality of substance > [noun]

metachromatism1893

metachromasia1896

polychromatophilia1897

metachromasy1903

sudanophilia1907

polychromasia1909

acidophilia1913

heteropycnosis1925

fuchsinophilia1940

basophilia1946

isopycnosis1950

1893 Jrnl. Royal Microsc. Soc. 563 (heading) Metachromatism of parasitic sporozoa and carcinoma cells.

1904 Brit. Med. Jrnl. 3 Dec. 1507 Under certain conditions of staining, different parts of the cell protoplasm possess different chemical affinities to the dye..(metachromatism).

1917 C. E. Marshall Microbiology (ed. 2) ii. 43 These bodies..are stained violet-red by most of the basic dyes, aniline blue or violet... By reason of this property of metachromatism, they have been called metachromatic granules.

1980 Mechanism Ageing & Devel. 14 469 Histochemical findings (reaction of the ground substance, metachromatism, and content of glycosaminoglycans).

1995 Proc. National Acad. Sci. U.S.A. 92 2962 It is well known that iodine binds to the amyloid substance,..which led Virchow to name it after its metachromatism when treated with acid-iodine.

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

单词	metachromatism
释义	metachromatismn. Brit. /ˌmɛtəˈkrəʊmətɪz(ə)m/, U.S. /ˌmɛdəˈkroʊməˌtɪz(ə)m/ Origin: Formed within English, by derivation. Etymons: meta- prefix, chromatism n. Etymology: < meta- prefix + chromatism n.; in later use in sense 1 probably after French métachromatisme (1866 in Littré of the colour of hair, skin, etc.), although in quot. 1876 at sense 1a apparently an independent formation; in sense 2 after German Metachromasie (see metachromasia n.). Compare metachromatic adj., metachrome n., and metachromism n. 1. Science. †a. Change of colour produced by heating. Obsolete. ΘΚΠ the world > matter > colour > change of colour > [noun] discoloura1398 discolouring?a1425 discolouration1545 discolouredness1585 transcoloration1664 discolourment1762 discolorization1827 metachromatism1876 metachromism1876 metachrosis1887 tinctumutation1895 electrochromism1961 the world > life > biology > biological processes > development, growth, or degeneration > [noun] > change of colour metachromatism1876 metachromism1876 metachrosis1887 1876 W. Ackroyd in Chem. News 25 Aug. 75/1 Many bodies change colour, when they are heated, without suffering any alteration of chemical composition... We venture, therefore, to propose for the phenomenon the name of Metachromatism. b. Change of the colour of hair, skin, etc. Now rare.In quot. 1960 = metachrosis n. In quot. 2000 = metachromism n. 2. ΚΠ 1890 New Sydenham Soc. Lexicon Metachromatism, a change or alteration of colour, as in the hair or feathers, from advance of age. 1960 Ecology 41 207/1 Metachromatism of lizards was one of the problems encountered in this study. 2000 New Scientist 5 Feb. 35/2 His insistence that all animals are progressing relentlessly to an albinistic future was probably enough to put most people off metachromatism. 2. Histology and Biology. = metachromasia n. ΘΚΠ the world > life > biology > substance > staining quality of substance > [noun] metachromatism1893 metachromasia1896 polychromatophilia1897 metachromasy1903 sudanophilia1907 polychromasia1909 acidophilia1913 heteropycnosis1925 fuchsinophilia1940 basophilia1946 isopycnosis1950 1893 Jrnl. Royal Microsc. Soc. 563 (heading) Metachromatism of parasitic sporozoa and carcinoma cells. 1904 Brit. Med. Jrnl. 3 Dec. 1507 Under certain conditions of staining, different parts of the cell protoplasm possess different chemical affinities to the dye..(metachromatism). 1917 C. E. Marshall Microbiology (ed. 2) ii. 43 These bodies..are stained violet-red by most of the basic dyes, aniline blue or violet... By reason of this property of metachromatism, they have been called metachromatic granules. 1980 Mechanism Ageing & Devel. 14 469 Histochemical findings (reaction of the ground substance, metachromatism, and content of glycosaminoglycans). 1995 Proc. National Acad. Sci. U.S.A. 92 2962 It is well known that iodine binds to the amyloid substance,..which led Virchow to name it after its metachromatism when treated with acid-iodine. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1876
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