† dichroousadj.

Forms: 1800s dichroöus, 1800s dichroous.

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

Etymology: < ancient Greek δίχρους (uncontracted δίχροος) two-coloured ( < δι- di- comb. form + χρώς colour < the same base as χρῶμα colour: see chrome n.) + -ous suffix. Compare earlier dichroic adj. N.E.D. (1895) gives the pronunciation as (dəi·kroˌəs) /ˈdaɪkrəʊəs/.

Chiefly Chemistry. Obsolete.

= dichroic adj.

ΘΚΠ

the world > matter > colour > variegation > [adjective] > two colours

dichroitic1822

dichromatica1830

dichroic1849

dichroous1856

dichromic1860

dichroistic1877

bicolour1889

two-toned1897

twi-coloured1903

two-tone1906

bichrome1929

duotone1934

1856 London & Edinb. Philos. Mag. & Jrnl. Sci. Mar. 243 Let the object be a dichroöus crystal and let equal thicknesses of its substance be investigated.

1871 Amer. Chemist 2 18/2 The oil oozed out in pits dug in the soil and floated on the surface of the water as a dark green dichroous oil of high density.

1885 Pharmacist 19 123 The ethereal solution is dichroous, being by direct light of a beautiful emerald green, and by reflected light of a fine red color.

This entry has been updated (OED Third Edition, March 2014; most recently modified version published online September 2021).

单词	dichroous
释义	† dichroousadj. Forms: 1800s dichroöus, 1800s dichroous. Origin: A borrowing from Greek, combined with an English element. Etymons: Greek δίχρους , -ous suffix. Etymology: < ancient Greek δίχρους (uncontracted δίχροος) two-coloured ( < δι- di- comb. form + χρώς colour < the same base as χρῶμα colour: see chrome n.) + -ous suffix. Compare earlier dichroic adj. N.E.D. (1895) gives the pronunciation as (dəi·kroˌəs) /ˈdaɪkrəʊəs/. Chiefly Chemistry. Obsolete. = dichroic adj. ΘΚΠ the world > matter > colour > variegation > [adjective] > two colours dichroitic1822 dichromatica1830 dichroic1849 dichroous1856 dichromic1860 dichroistic1877 bicolour1889 two-toned1897 twi-coloured1903 two-tone1906 bichrome1929 duotone1934 1856 London & Edinb. Philos. Mag. & Jrnl. Sci. Mar. 243 Let the object be a dichroöus crystal and let equal thicknesses of its substance be investigated. 1871 Amer. Chemist 2 18/2 The oil oozed out in pits dug in the soil and floated on the surface of the water as a dark green dichroous oil of high density. 1885 Pharmacist 19 123 The ethereal solution is dichroous, being by direct light of a beautiful emerald green, and by reflected light of a fine red color. This entry has been updated (OED Third Edition, March 2014; most recently modified version published online September 2021). < adj.1856
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