nebula(redirected from nebulae)
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the Crab Nebula, photographed by the Hubble Space Telescope in 2005
n. pl. neb·u·lae (-lē′) or neb·u·las
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.
a. A cloudy spot on the cornea.
b. A liquid preparation for use in a nebulizer.
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]
neb•u•la(ˈnɛb yə lə)
n., pl. -lae (-ˌli, -ˌlaɪ)
a. a cloud of interstellar gas and dust.
b. (formerly) any distant celestial object that appears hazy or fuzzy.
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]
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.
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.
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|Noun||1.||nebula - a medicinal liquid preparation intended for use in an atomizer|
|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|
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
nebula[ˈnebjʊlə] N (nebulas or nebulae (pl)) [ˈnebjʊliː] → nebulosa f
nebula[ˈnɛbjʊlə] n → nébuleuse f
nebula[ˈnɛbjʊlə] n → nebulosa
n. nébula, opacidad ligera de la córnea.