achromaticadj.n.

Brit.

/ˌakrə(ʊ)ˈmatɪk/,

/ˌeɪkrə(ʊ)ˈmatɪk/, U.S.

/ˌækrəˈmædɪk/,

/ˌeɪkrəˈmædɪk/

Forms: 1700s–1800s achromatick, 1700s– achromatic.

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

Etymology: < ancient Greek ἀχρώματος colourless ( < ἀ- a- prefix⁶ + χρῶματ- , χρῶμα colour: see chrome n.) + -ic suffix. Compare post-classical Latin achromaticus (1768 or earlier), French achromatique (1764), German achromatisch (1775 or earlier).

A. adj.

a. Optics. Of an optical system, esp. a lens: transmitting light without separating it into its constituent colours; affecting light of all visible wavelengths in the same way.

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

1759 B. Martin New Elements Optics viii. 84 Remarks on the Nature, Construction, and Effects of the foregoing Achromatic* Telescope. The Telescope..is such, as I think provides against all the Errors of Vision by refracted Light. [Note] *From the Greek α privative, and χρῶμα, Colour.

1765 E. Nairne Bill 6 Sept. in B. Franklin Papers (1968) XII. 259 An Achromatic prospective Glass with two Eye Glasses in one Slider.

1793 Mem. Amer. Acad. Sci. 2 24 For observing the contacts, I was furnished with an excellent achromatick telescope.

1869 J. Tyndall Notes 9 Lect. on Light 42 The human eye is not achromatic. It suffers from chromatic aberration.

1890 W. E. Woodbury Encycl. Photogr. 293 Unless the lens be rendered achromatic, the actinic or chemical focus does not coincide with the visual focus.

1944 Biol. Bull. 87 191 An achromatic condenser and a concentrated filament lamp, with ground-glass ray-filter and an iris diaphragm.

1977 Naples (Florida) Daily News 8 May 8E/1 (advt.) The achromatic coated optics correct color distortion even at high magnification.

2000 Limnol. & Oceanogr. 45 1169/1 A telescope consisting of a negative lens and an air-spaced achromatic doublet lens.

b. figurative. Neutral, uncoloured. Also: bland, uninteresting.

ΘΚΠ

the mind > attention and judgement > judgement or decision > absence of prejudice > [adjective] > taking neutral stance

neuter1494

neutral1494

neuter1525

indifferenta1538

neuterlike1556

neutralizing1602

neutralist1648

colourless1793

achromatic1799

uncommitted1814

(to stand or sit) on or upon the fence1828

non-committal1829

non-partisan1843

whitey-brown1892

middle of the road1894

neutralistic1914

value-free1916

value-neutral1929

middle road1951

non-aligned1954

unaligned1961

the mind > emotion > suffering > feeling of weariness or tedium > [adjective] > wearisome or tedious > bland or insipid

colourlessc1425

unsavouryc1449

wearish?1533

wersha1599

tasteless1603

tame1604

juiceless1620

water gruela1627

dry1632

soulless1632

frigid1643

vapid1656

insipida1684

fade1715

heartless1780

vapid1785

achromatic1799

sauceless1817

albuminous1858

antiseptic1891

flat-footed1899

unatmospheric1913

defanged1920

anodyne1933

spiceless1942

tea-party1961

nothingburger1965

1799 S. Dickson Union of Taste & Sci. 9 Young Science beams all-glorious to eye, As achromatic Truth his form displays In the bright focus of coelestial rays.

1886 Baptist Q. Rev. 8 423 He encourages the expectation that he will offer an achromatic medium through which to view our national experience.

1912 O. Elton Surv. Eng. Lit. (1920) II. xiv. 9 His achromatic prose, with all its effortless ease and rightness, leaves us impatient and dissatisfied.

2007 Christian Sci. Monitor (Nexis) 23 Aug. 9 It is a detached, achromatic approach that risks conveying neutrality.

c. Lacking hue (hue n.¹ 3c); of or designating the colours black, white, and grey, individually or in combination.

ΚΠ

1872 R. Browning Fifine lix. 65 Wholly blent, Our old things shall be new, and, what we both ignite, Fuse, lose the varicolor in achromatic white.

1925 Science Oct. p. x/2 ‘Gray’ received the most votes for what is commonly called by that name, but ‘neutral color’ and ‘achromatic colors’ found a large number of adherents.

1971 J. Kagan Change & Continuity in Infancy iii. 62 At 4 months of age achromatic illustrations of faces elicited fixation times that were twice as long as those displayed to random shapes.

2006 Philippine Daily Inquirer (Nexis) 24 May [They] created a kitchen called Salt and Pepper. The name was a nod to the room's achromatic color scheme.

2. Cell Biology. Designating tissue, cells, etc., which are colourless and are not stained by basic dyes; of or relating to such tissue. Cf. achromatin n.

ΚΠ

1871 Proc. Amer. Philos. Soc. 1869–70 11 123 External tegument achromatic, rarely sub-achromatic, generally scarcely visible.

1882 Jrnl. Microsc. Sci. Jan. 41 Figs. 30 and 31, from the cranial cartilage of a toad, show the achromatic striæ more clearly.

1925 E. B. Wilson Cell (ed. 3) i. 88 The [nuclear] framework itself appears to consist of two constituents, namely, a continuous ‘achromatic’ basis, and of more or less discontinuous granules or clumps of ‘chromatin’ suspended in it.

2006 Jrnl. Parasitology 90 1311/2 A large achromatic nucleolus was usually present surrounded by a halo of many fine chromatin granules.

B. n.

Optics. An achromatic lens.

ΘΚΠ

the world > physical sensation > sight and vision > optical instruments > lens > [noun] > other lenses

concave1632

globe1653

meniscus1693

hemispherule1696

convex1705

omphaloptic1728

omphalopter1738

crown lens1764

achromatic1785

condenser1798

meniscus lens1820

Fresnel lens1835

bull's-eye1839

Stanhope lens1850

spot lens1860

amplifier1866

achromat1873

projectora1884

aplanat1890

triplet condenser1892

Aldis lens1902

monocentric1922

Schmidt correcting plate1934

coated lens1948

Panavision1955

Schmidt correcting lens1961

re-imaging1962

1785 W. Herschel in Philos. Trans. (Royal Soc.) 75 44 One of Mr. Dollond's best 3½ feet achromatics.

1842 Jrnl. Franklin Inst. 3 393 Short..limited himself in almost every instance to sizes which were not more powerful than the achromatics of his day.

1878 S. Newcomb Pop. Astron. ii. i. 125 An achromatic of four inches aperture was then considered of extraordinary size.

1962 Sci. News Let. 5 May 287/3 (advt.) Perfect telescope for student astronomers... 30mm coated achromatics, chrome plated tubes and tripod.

1998 H. J. Swatland Computer Operation for Microscope Photometry i. 12 It is useful to know that ordinary achromatics can give perfect results with monochromatic light.

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

单词	achromatic
释义	achromaticadj.n. Brit. /ˌakrə(ʊ)ˈmatɪk/, /ˌeɪkrə(ʊ)ˈmatɪk/, U.S. /ˌækrəˈmædɪk/, /ˌeɪkrəˈmædɪk/ Forms: 1700s–1800s achromatick, 1700s– achromatic. Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ἀχρώματος , -ic suffix. Etymology: < ancient Greek ἀχρώματος colourless ( < ἀ- a- prefix⁶ + χρῶματ- , χρῶμα colour: see chrome n.) + -ic suffix. Compare post-classical Latin achromaticus (1768 or earlier), French achromatique (1764), German achromatisch (1775 or earlier). A. adj. 1. a. Optics. Of an optical system, esp. a lens: transmitting light without separating it into its constituent colours; affecting light of all visible wavelengths in the same way. 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 1759 B. Martin New Elements Optics viii. 84 Remarks on the Nature, Construction, and Effects of the foregoing Achromatic* Telescope. The Telescope..is such, as I think provides against all the Errors of Vision by refracted Light. [Note] From the Greek α privative, and χρῶμα, Colour. 1765 E. Nairne Bill* 6 Sept. in B. Franklin Papers (1968) XII. 259 An Achromatic prospective Glass with two Eye Glasses in one Slider. 1793 Mem. Amer. Acad. Sci. 2 24 For observing the contacts, I was furnished with an excellent achromatick telescope. 1869 J. Tyndall Notes 9 Lect. on Light 42 The human eye is not achromatic. It suffers from chromatic aberration. 1890 W. E. Woodbury Encycl. Photogr. 293 Unless the lens be rendered achromatic, the actinic or chemical focus does not coincide with the visual focus. 1944 Biol. Bull. 87 191 An achromatic condenser and a concentrated filament lamp, with ground-glass ray-filter and an iris diaphragm. 1977 Naples (Florida) Daily News 8 May 8E/1 (advt.) The achromatic coated optics correct color distortion even at high magnification. 2000 Limnol. & Oceanogr. 45 1169/1 A telescope consisting of a negative lens and an air-spaced achromatic doublet lens. b. figurative. Neutral, uncoloured. Also: bland, uninteresting. ΘΚΠ the mind > attention and judgement > judgement or decision > absence of prejudice > [adjective] > taking neutral stance neuter1494 neutral1494 neuter1525 indifferenta1538 neuterlike1556 neutralizing1602 neutralist1648 colourless1793 achromatic1799 uncommitted1814 (to stand or sit) on or upon the fence1828 non-committal1829 non-partisan1843 whitey-brown1892 middle of the road1894 neutralistic1914 value-free1916 value-neutral1929 middle road1951 non-aligned1954 unaligned1961 the mind > emotion > suffering > feeling of weariness or tedium > [adjective] > wearisome or tedious > bland or insipid colourlessc1425 unsavouryc1449 wearish?1533 wersha1599 tasteless1603 tame1604 juiceless1620 water gruela1627 dry1632 soulless1632 frigid1643 vapid1656 insipida1684 fade1715 heartless1780 vapid1785 achromatic1799 sauceless1817 albuminous1858 antiseptic1891 flat-footed1899 unatmospheric1913 defanged1920 anodyne1933 spiceless1942 tea-party1961 nothingburger1965 1799 S. Dickson Union of Taste & Sci. 9 Young Science beams all-glorious to eye, As achromatic Truth his form displays In the bright focus of coelestial rays. 1886 Baptist Q. Rev. 8 423 He encourages the expectation that he will offer an achromatic medium through which to view our national experience. 1912 O. Elton Surv. Eng. Lit. (1920) II. xiv. 9 His achromatic prose, with all its effortless ease and rightness, leaves us impatient and dissatisfied. 2007 Christian Sci. Monitor (Nexis) 23 Aug. 9 It is a detached, achromatic approach that risks conveying neutrality. c. Lacking hue (hue n.¹ 3c); of or designating the colours black, white, and grey, individually or in combination. ΚΠ 1872 R. Browning Fifine lix. 65 Wholly blent, Our old things shall be new, and, what we both ignite, Fuse, lose the varicolor in achromatic white. 1925 Science Oct. p. x/2 ‘Gray’ received the most votes for what is commonly called by that name, but ‘neutral color’ and ‘achromatic colors’ found a large number of adherents. 1971 J. Kagan Change & Continuity in Infancy iii. 62 At 4 months of age achromatic illustrations of faces elicited fixation times that were twice as long as those displayed to random shapes. 2006 Philippine Daily Inquirer (Nexis) 24 May [They] created a kitchen called Salt and Pepper. The name was a nod to the room's achromatic color scheme. 2. Cell Biology. Designating tissue, cells, etc., which are colourless and are not stained by basic dyes; of or relating to such tissue. Cf. achromatin n. ΚΠ 1871 Proc. Amer. Philos. Soc. 1869–70 11 123 External tegument achromatic, rarely sub-achromatic, generally scarcely visible. 1882 Jrnl. Microsc. Sci. Jan. 41 Figs. 30 and 31, from the cranial cartilage of a toad, show the achromatic striæ more clearly. 1925 E. B. Wilson Cell (ed. 3) i. 88 The [nuclear] framework itself appears to consist of two constituents, namely, a continuous ‘achromatic’ basis, and of more or less discontinuous granules or clumps of ‘chromatin’ suspended in it. 2006 Jrnl. Parasitology 90 1311/2 A large achromatic nucleolus was usually present surrounded by a halo of many fine chromatin granules. B. n. Optics. An achromatic lens. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > lens > [noun] > other lenses concave1632 globe1653 meniscus1693 hemispherule1696 convex1705 omphaloptic1728 omphalopter1738 crown lens1764 achromatic1785 condenser1798 meniscus lens1820 Fresnel lens1835 bull's-eye1839 Stanhope lens1850 spot lens1860 amplifier1866 achromat1873 projectora1884 aplanat1890 triplet condenser1892 Aldis lens1902 monocentric1922 Schmidt correcting plate1934 coated lens1948 Panavision1955 Schmidt correcting lens1961 re-imaging1962 1785 W. Herschel in Philos. Trans. (Royal Soc.) 75 44 One of Mr. Dollond's best 3½ feet achromatics. 1842 Jrnl. Franklin Inst. 3 393 Short..limited himself in almost every instance to sizes which were not more powerful than the achromatics of his day. 1878 S. Newcomb Pop. Astron. ii. i. 125 An achromatic of four inches aperture was then considered of extraordinary size. 1962 Sci. News Let. 5 May 287/3 (advt.) Perfect telescope for student astronomers... 30mm coated achromatics, chrome plated tubes and tripod. 1998 H. J. Swatland Computer Operation for Microscope Photometry i. 12 It is useful to know that ordinary achromatics can give perfect results with monochromatic light. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021). < adj.n.1759
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