achromatousadj.

Brit.

/aˈkrəʊmətəs/,

/eɪˈkrəʊmətəs/, U.S.

/æˈkroʊmədəs/,

/eɪˈkroʊmədəs/

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ἀχρώματος , -ous suffix.

Etymology: < ancient Greek ἀχρώματος (see achromatic adj.) + -ous suffix. Compare earlier achromatic adj. and achromic adj.

Chiefly Medicine. Now rare.

Colourless, lacking coloration.

ΘΚΠ

the world > matter > colour > state or mode of having colour > absence of colour > [adjective]

huelessc1000

whiteOE

plainc1330

uncoloured1538

undyed1538

colourless1610

blank1667

unteinted1745

achromatic1759

achromic1762

etiolated1784

tintless1789

unshaded1823

achromatous1845

untinted1849

unpigmented1853

achromatistous1878

achromous1878

achroous1878

decolorized1879

etiolized1880

untoned1897

1845 Encycl. Metrop. VII. 693 Achromatous inflammations..form a class of diseases which, though numerous, has hitherto been little studied.

1863 R. H. Blake tr. C. Caillault Pract. Treat. Dis. Skin Children (ed. 2) 165 The latter mode is more frequently observed in the achromatous variety [of porrigo].

1882 R. Quain Dict. Med. I. 9/2 An achromatous or colourless state of an usually coloured tissue.

2007 Physics Lett. A. 369 107/2 15 g methyl methacrylate (MMA) monomer was first rinsed with five percent of caustic soda solution in delivery flask until the color of MMA became achromatous.

This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021).

单词	achromatous
释义	achromatousadj. Brit. /aˈkrəʊmətəs/, /eɪˈkrəʊmətəs/, U.S. /æˈkroʊmədəs/, /eɪˈkroʊmədəs/ Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ἀχρώματος , -ous suffix. Etymology: < ancient Greek ἀχρώματος (see achromatic adj.) + -ous suffix. Compare earlier achromatic adj. and achromic adj. Chiefly Medicine. Now rare. Colourless, lacking coloration. ΘΚΠ the world > matter > colour > state or mode of having colour > absence of colour > [adjective] huelessc1000 whiteOE plainc1330 uncoloured1538 undyed1538 colourless1610 blank1667 unteinted1745 achromatic1759 achromic1762 etiolated1784 tintless1789 unshaded1823 achromatous1845 untinted1849 unpigmented1853 achromatistous1878 achromous1878 achroous1878 decolorized1879 etiolized1880 untoned1897 1845 Encycl. Metrop. VII. 693 Achromatous inflammations..form a class of diseases which, though numerous, has hitherto been little studied. 1863 R. H. Blake tr. C. Caillault Pract. Treat. Dis. Skin Children (ed. 2) 165 The latter mode is more frequently observed in the achromatous variety [of porrigo]. 1882 R. Quain Dict. Med. I. 9/2 An achromatous or colourless state of an usually coloured tissue. 2007 Physics Lett. A. 369 107/2 15 g methyl methacrylate (MMA) monomer was first rinsed with five percent of caustic soda solution in delivery flask until the color of MMA became achromatous. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021). < adj.1845
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