nebula

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nebula
the Crab Nebula, photographed by the Hubble Space Telescope in 2005

neb·u·la

 (nĕb′yə-lə)
n. pl. neb·u·lae (-lē′) or neb·u·las
1. Astronomy
a. A diffuse cloud of interstellar dust or gas or both, visible as luminous patches or areas of darkness depending on the way the mass absorbs or reflects incident light or emits its own light.
b. A galaxy. No longer in technical use.
2. Medicine
a. A cloudy spot on the cornea.
b. A liquid preparation for use in a nebulizer.

[Middle English nebule, cloud, mist, from Latin nebula; see nebh- in Indo-European roots.]

neb′u·lar adj.

nebula

(ˈnɛbjʊlə)
n, pl -lae (-ˌliː) or -las
1. (Astronomy) astronomy a diffuse cloud of particles and gases (mainly hydrogen) that is visible either as a hazy patch of light (either an emission or a reflection nebula) or an irregular dark region against a brighter background (dark nebula). Compare planetary nebula
2. (Pathology) pathol
a. opacity of the cornea
b. cloudiness of the urine
3. (Medicine) any substance for use in an atomizer spray
[C17: from Latin: mist, cloud; related to Greek nephétē cloud, Old High German nebul cloud, Old Norse njól night]
ˈnebular adj

neb•u•la

(ˈnɛb yə lə)

n., pl. -lae (-ˌli, -ˌlaɪ)
-las.
1.
a. a cloud of interstellar gas and dust.
b. (formerly) any distant celestial object that appears hazy or fuzzy.
2. Pathol.
a. a faint opacity in the cornea.
b. cloudiness in the urine.
[1655–65; < Latin: a mist, vapor, cloud; akin to Greek nephélē cloud, German Nebel fog, haze]
neb′u•lar, adj.

neb·u·la

(nĕb′yə-lə)
Plural nebulae (nĕb′yə-lē′) or nebulas
A thinly spread cloud of interstellar gas and dust. It will appear as a bright patch in the night sky if it reflects light from nearby stars, emits its own light, or re-emits ultraviolet radiation from nearby stars as visible light. If it absorbs light, the nebula appears as a dark patch. In dark nebulae, stars form from clumps of hydrogen gas. See more at star.

nebula


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A dust and gas cloud formed in space that is a source of stars. Sometimes used to refer to other galaxies, when their stars appear indistinct.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nebula - a medicinal liquid preparation intended for use in an atomizernebula - a medicinal liquid preparation intended for use in an atomizer
formulation, preparation - a substance prepared according to a formula; "the physician prescribed a commercial preparation of the medicine"
2.nebula - cloudiness of the urine
symptom - (medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease
3.nebula - an immense cloud of gas (mainly hydrogen) and dust in interstellar space
diffuse nebula, gaseous nebula - a cluster of stars within an intricate cloud of gas and dust
planetary nebula - a nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star
cloud - any collection of particles (e.g., smoke or dust) or gases that is visible
4.nebula - (pathology) a faint cloudy spot on the cornea
maculation, patch, speckle, dapple, fleck, spot - a small contrasting part of something; "a bald spot"; "a leopard's spots"; "a patch of clouds"; "patches of thin ice"; "a fleck of red"
pathology - the branch of medical science that studies the causes and nature and effects of diseases
Translations
mlhovina
kaasusumunebulatähtisumu
星雲
nebula

nebula

[ˈnebjʊlə] N (nebulas or nebulae (pl)) [ˈnebjʊliː]nebulosa f

nebula

[ˈnɛbjʊlə] nnébuleuse f

nebula

n pl <-e>
(Astron) → Nebel m, → Nebelfleck m
(Med) → Trübung f

nebula

[ˈnɛbjʊlə] nnebulosa

neb·u·la

n. nébula, opacidad ligera de la córnea.
References in classic literature ?
"He shuffles atoms and jets of light, remotest nebulae, drips of water, prick-points of sensation, slime-oozings and cosmic bulks, all mixed with pearls of faith, love of woman, imagined dignities, frightened surmises, and pompous arrogances, and of the stuff builds himself an immortality to startle the heavens and baffle the immensities.
Though it was discovered in 1780 by Pierre Mechain, French astronomer Charles Messier later added it to his "Catalogue of Nebulae and Star Clusters," which contains 110 astronomical objects.
I love observing planetary nebulae. They come in a wealth of fascinating shapes and rank among the rare deep-sky wonders prone to visibly boast color, most commonly interesting blends of blue and green.
Approximately 25 years ago astronomers discovered that if you look at planetary nebulae in another galaxy, the brightest ones always have the same brightness.
The nebulae, which emitted at least 10 times the sun's mass between 1838 and 1845 making it the second-brightest star in the sky, briefly outshone Canopus.
The year 2013 cannot be easily forgotten in the history of the Nebulae journal family.
Barnard catalogued it as B33 in his list of dark nebulae published in a 1919 paper in the Astrophysical Journal, where he notes 'Dark mass, diam 4', on nebulous strip extending south from zeta Orionis'.
Some fine emission nebulae are hidden in the celestial steam, and August is the best time to observe them.
At a distance of 650 light-years, Helix is one of the closest known planetary nebulae. These glowing bodies got their moniker a century ago when astronomers, using the smaller telescopes of the time, described their appearance as planetary disks.
Lying adjacent to the bright, 2nd-magnitude star Gamma Cassiopeiae ([gamma] Cas) are two attractive nebulae, IC 59 and IC 63.
For years, astronomers have known about planetary nebulae or clouds of gas and dust that form when stars weighing as much as eight Suns are on their way to becoming white dwarves.
TEHRAN (FNA)- A way of estimating more accurate distances to the thousands of so-called planetary nebulae dispersed across our Galaxy has been announced by a team of three astronomers.