nebulosityn.

Brit.

/ˌnɛbjᵿˈlɒsᵻti/, U.S.

/ˌnɛbjəˈlɑsədi/

Origin: Formed within English, by derivation. Etymons: nebulous adj., -ity suffix.

Etymology: < nebulous adj. + -ity suffix. Compare French nébulosité (1488 in Middle French) and its etymon post-classical Latin nebulositas (3rd or early 4th cent.). Compare earlier nebulousness n.

1. Astronomy. An indistinctly luminous or hazy appearance or state; nebulous quality. Also: matter having such an appearance or form; (as a count noun) an indistinct, faintly luminous mass, a nebula or nebulous star.

ΘΚΠ

the world > matter > light > [noun] > shining or being luminous > something luminous

shiner1398

lustre1743

nebulosity1762

luminosity1853

the world > the universe > constellation > nebula > [noun] > state

nebulousness1653

nebulosity1833

the world > the universe > constellation > star-cluster > [noun] > nebula > state of being

nebulousness1653

nebulosity1833

1762 Philos. Trans. 1761 (Royal Soc.) 52 398 Mr. Hirst is apprehensive, that to be able to discern an atmosphere about a planet at so great a distance as Venus, may be regarded as chimerical; yet affirms, that such nebulosity was seen by them.

1789 W. Herschel in Philos. Trans. (Royal Soc.) 79 221 It is among these that we find the largest assemblages of stars, and most diffusive nebulosities.

1833 J. F. W. Herschel Astronomy xii. 407 A phænomenon which seems to indicate the existence of some slight degree of nebulosity about the sun itself.

1865 W. S. O. tr. L. Figuier World before Deluge 415 We have seen the globe floating in space in the state of gaseous nebulosity.

1878 S. Newcomb Pop. Astron. iii. v. 380 A very faint nebulosity, about 3′ in diameter.

1898 Appletons' Pop. Sci. Monthly July 410/2 The molecules of which the primitive nebulosity of the universe was composed.

1955 Sci. News Let. 21 May 322/2 The Great Loop remarkably resembles a mass of nebulosity..in the constellation of Gemini.

1975 I. Asimov Eyes on Universe (1976) xi. 223 There was a tiny wisp of nebulosity associated with it [sc. a star].

1987 B. Bova Voyagers II: Alien Within xxvi. 203 The view from the homeworld is clear, not shrouded with nebulosity.

1990 D. H. Menzel & J. M. Pasachoff Field Guide Stars & Planets vii. 190 Small telescopes disappointingly show only an oval nebulosity.

1995 Times 30 Jan. 18/6 Much of the area..of the constellation Orion is covered by nebulosity.

2. figurative. Vagueness; indistinctness; lack of exactness, precision, or certainty; (also) a vague, indistinct, or uncertain person or thing.

ΘΚΠ

the mind > mental capacity > belief > uncertainty, doubt, hesitation > insecure knowledge, uncertainty > [noun] > unclear condition

obscurity1474

mist1532

cloud-lighta1536

indeterminateness1644

undistinction1647

indeterminacy1649

indistinction1651

undeterminateness1653

inestimability1678

undefinableness?1705

confusion1729

obnubilation1753

cloudiness1779

indistinctness1783

haze1790

haziness1796

vagueness1799

nebulosity1809

undefinednessa1832

undecidedness1897

indeterminism1928

fuzziness1973

smog1976

1809 J. Jebb Let. Mar. in J. Jebb & A. Knox Thirty Years' Corr. (1834) I. 522 Eternal misconceptions, misrepresentations, nebulosities, and logomachies.

1876 Trans. Victoria Inst. 30 That dim nebulosity in which they are too often enveloped.

1899 R. W. Buchanan Devil's Sabbath in New Rome 369 The essence of his creed was gentle nebulosity.

1927 Harper's Mag. Oct. 649/1 There existed between them that vague nebulosity known as ‘an understanding’.

1931 V. Woolf Waves 303 I, considering Neville, so neat and exact, felt the nebulosity of my own life.

1943 Jrnl. Royal Statist. Soc. 106 247 It might materially reduce the nebulosities of statistics.

1998 P. Gourevitch We wish to inform You xxi. 325 The nebulosity known as the international community is ultimately accountable to nobody.

a. Indistinct or diffuse luminousness; something exhibiting this quality.

ΘΚΠ

the world > matter > light > [noun] > shining or being luminous

shininga1300

lighteninga1382

lucencec1485

overshining1587

emication1633

luminosity1634

outshining1648

luminousness1668

fulsion1680

affulsion1730

raying1787

lumination1794

nebulosity1813

lustrousness1839

luminance1880

the world > physical sensation > sight and vision > invisibility > [noun] > indistinctness > thing

shadow1594

nebulosity1813

haze1820

shape1834

smudge1871

indistinct1880

1813 Philos. Trans. (Royal Soc.) 103 104 When the image that had disappeared recovers its full lustre, the surrounding nebulosity is very small.

1837 C. R. Goring & A. Pritchard Micrographia 105 A slight fog of the diffused kind.., or a penumbra or nebulosity encircling numerous points.

1851 Microscopist 99 It [sc. spherical aberration] shows itself..first, as a diffused nebulosity over the whole field of view; secondly, as a confined nebulosity, extending only to a certain distance from the object.

1856 P. H. Gosse Ocean 374 The nebulosity instantly separated into small masses,..leaving the water between of its own clear blackness.

1896 Proc. Royal Soc. 1895–6 59 81 The group ε seems sometimes to be only a bright nebulosity, but gradually there appear four very distinct bands.

1903 W. D. Howells Lett. Home xix. 120 She meant..the blur of faces, which the opera glass distinguishes and the eye leaves in a shining nebulosity.

1909 Westm. Gaz. 25 Mar. 2/1 The track was almost a straight line. It began gradually to broaden until it finally presented the appearance of a brilliant wide nebulosity.

b. Cloudiness, haziness; (Meteorology) the extent or degree of cloud cover (now rare or disused).

ΚΠ

1848 Jrnl. Royal Agric. Soc. 9 326 (note) The means which photography has offered towards the easy and delicate appreciation of degrees of nebulosity.

1910 J. Moore Meteorol. (ed. 2) xvii. 218 This instrument..permits the cloud-percentage (nebulosity) to be measured without any fear of an error in the number of the tenths.

1912 T. Hardy Tess of the D'Urbervilles (rev. ed.) x. 77 The powdery residuum from the storage of peat and other products, the stirring of which by their turbulent feet created the nebulosity that involved the scene.

1919 Jrnl. Ecol. 7 140 Solar radiation has for its reciprocal the extent of nebulosity.

1933 Jrnl. Animal Ecol. 2 263 Nebulosity readings taken only three times a day cannot give a particularly good measure of conditions of sunshine.

This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022).

单词	nebulosity
释义	nebulosityn. Brit. /ˌnɛbjᵿˈlɒsᵻti/, U.S. /ˌnɛbjəˈlɑsədi/ Origin: Formed within English, by derivation. Etymons: nebulous adj., -ity suffix. Etymology: < nebulous adj. + -ity suffix. Compare French nébulosité (1488 in Middle French) and its etymon post-classical Latin nebulositas (3rd or early 4th cent.). Compare earlier nebulousness n. 1. Astronomy. An indistinctly luminous or hazy appearance or state; nebulous quality. Also: matter having such an appearance or form; (as a count noun) an indistinct, faintly luminous mass, a nebula or nebulous star. ΘΚΠ the world > matter > light > [noun] > shining or being luminous > something luminous shiner1398 lustre1743 nebulosity1762 luminosity1853 the world > the universe > constellation > nebula > [noun] > state nebulousness1653 nebulosity1833 the world > the universe > constellation > star-cluster > [noun] > nebula > state of being nebulousness1653 nebulosity1833 1762 Philos. Trans. 1761 (Royal Soc.) 52 398 Mr. Hirst is apprehensive, that to be able to discern an atmosphere about a planet at so great a distance as Venus, may be regarded as chimerical; yet affirms, that such nebulosity was seen by them. 1789 W. Herschel in Philos. Trans. (Royal Soc.) 79 221 It is among these that we find the largest assemblages of stars, and most diffusive nebulosities. 1833 J. F. W. Herschel Astronomy xii. 407 A phænomenon which seems to indicate the existence of some slight degree of nebulosity about the sun itself. 1865 W. S. O. tr. L. Figuier World before Deluge 415 We have seen the globe floating in space in the state of gaseous nebulosity. 1878 S. Newcomb Pop. Astron. iii. v. 380 A very faint nebulosity, about 3′ in diameter. 1898 Appletons' Pop. Sci. Monthly July 410/2 The molecules of which the primitive nebulosity of the universe was composed. 1955 Sci. News Let. 21 May 322/2 The Great Loop remarkably resembles a mass of nebulosity..in the constellation of Gemini. 1975 I. Asimov Eyes on Universe (1976) xi. 223 There was a tiny wisp of nebulosity associated with it [sc. a star]. 1987 B. Bova Voyagers II: Alien Within xxvi. 203 The view from the homeworld is clear, not shrouded with nebulosity. 1990 D. H. Menzel & J. M. Pasachoff Field Guide Stars & Planets vii. 190 Small telescopes disappointingly show only an oval nebulosity. 1995 Times 30 Jan. 18/6 Much of the area..of the constellation Orion is covered by nebulosity. 2. figurative. Vagueness; indistinctness; lack of exactness, precision, or certainty; (also) a vague, indistinct, or uncertain person or thing. ΘΚΠ the mind > mental capacity > belief > uncertainty, doubt, hesitation > insecure knowledge, uncertainty > [noun] > unclear condition obscurity1474 mist1532 cloud-lighta1536 indeterminateness1644 undistinction1647 indeterminacy1649 indistinction1651 undeterminateness1653 inestimability1678 undefinableness?1705 confusion1729 obnubilation1753 cloudiness1779 indistinctness1783 haze1790 haziness1796 vagueness1799 nebulosity1809 undefinednessa1832 undecidedness1897 indeterminism1928 fuzziness1973 smog1976 1809 J. Jebb Let. Mar. in J. Jebb & A. Knox Thirty Years' Corr. (1834) I. 522 Eternal misconceptions, misrepresentations, nebulosities, and logomachies. 1876 Trans. Victoria Inst. 30 That dim nebulosity in which they are too often enveloped. 1899 R. W. Buchanan Devil's Sabbath in New Rome 369 The essence of his creed was gentle nebulosity. 1927 Harper's Mag. Oct. 649/1 There existed between them that vague nebulosity known as ‘an understanding’. 1931 V. Woolf Waves 303 I, considering Neville, so neat and exact, felt the nebulosity of my own life. 1943 Jrnl. Royal Statist. Soc. 106 247 It might materially reduce the nebulosities of statistics. 1998 P. Gourevitch We wish to inform You xxi. 325 The nebulosity known as the international community is ultimately accountable to nobody. 3. a. Indistinct or diffuse luminousness; something exhibiting this quality. ΘΚΠ the world > matter > light > [noun] > shining or being luminous shininga1300 lighteninga1382 lucencec1485 overshining1587 emication1633 luminosity1634 outshining1648 luminousness1668 fulsion1680 affulsion1730 raying1787 lumination1794 nebulosity1813 lustrousness1839 luminance1880 the world > physical sensation > sight and vision > invisibility > [noun] > indistinctness > thing shadow1594 nebulosity1813 haze1820 shape1834 smudge1871 indistinct1880 1813 Philos. Trans. (Royal Soc.) 103 104 When the image that had disappeared recovers its full lustre, the surrounding nebulosity is very small. 1837 C. R. Goring & A. Pritchard Micrographia 105 A slight fog of the diffused kind.., or a penumbra or nebulosity encircling numerous points. 1851 Microscopist 99 It [sc. spherical aberration] shows itself..first, as a diffused nebulosity over the whole field of view; secondly, as a confined nebulosity, extending only to a certain distance from the object. 1856 P. H. Gosse Ocean 374 The nebulosity instantly separated into small masses,..leaving the water between of its own clear blackness. 1896 Proc. Royal Soc. 1895–6 59 81 The group ε seems sometimes to be only a bright nebulosity, but gradually there appear four very distinct bands. 1903 W. D. Howells Lett. Home xix. 120 She meant..the blur of faces, which the opera glass distinguishes and the eye leaves in a shining nebulosity. 1909 Westm. Gaz. 25 Mar. 2/1 The track was almost a straight line. It began gradually to broaden until it finally presented the appearance of a brilliant wide nebulosity. b. Cloudiness, haziness; (Meteorology) the extent or degree of cloud cover (now rare or disused). ΚΠ 1848 Jrnl. Royal Agric. Soc. 9 326 (note) The means which photography has offered towards the easy and delicate appreciation of degrees of nebulosity. 1910 J. Moore Meteorol. (ed. 2) xvii. 218 This instrument..permits the cloud-percentage (nebulosity) to be measured without any fear of an error in the number of the tenths. 1912 T. Hardy Tess of the D'Urbervilles (rev. ed.) x. 77 The powdery residuum from the storage of peat and other products, the stirring of which by their turbulent feet created the nebulosity that involved the scene. 1919 Jrnl. Ecol. 7 140 Solar radiation has for its reciprocal the extent of nebulosity. 1933 Jrnl. Animal Ecol. 2 263 Nebulosity readings taken only three times a day cannot give a particularly good measure of conditions of sunshine. This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022). < n.1762
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