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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
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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.nebular - of or relating to or resembling a nebula; "the nebular hypothesis of the origin of the solar system"
astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
2.nebular - resembling a cloud
cloudy - full of or covered with clouds; "cloudy skies"
References in classic literature ?
The poem swung in majestic rhythm to the cool tumult of interstellar conflict, to the onset of starry hosts, to the impact of cold suns and the flaming up of nebular in the darkened void; and through it all, unceasing and faint, like a silver shuttle, ran the frail, piping voice of man, a querulous chirp amid the screaming of planets and the crash of systems.
It must be, if the nebular hypothesis has any truth, older than our world; and long before this earth ceased to be molten, life upon its surface must have begun its course.
I had about deduced from certain astronomic phenomena I have had under minute observation during the past several tropic nights an entirely new nebular hypothesis which will unquestionably startle the scientific world.
I knew that you could not say to yourself'stereotomy' without being brought to think of atomies, and thus of the theories of Epicurus; and since, when we discussed this subject not very long ago, I mentioned to you how singularly, yet with how little notice, the vague guesses of that noble Greek had met with confirmation in the late nebular cosmogony, I felt that you could not avoid casting your eyes upward to the great nebula in Orion, and I certainly expected that you would do so.
Seyfert, of Warner and Swasey Observatory, has been studying six of a rare class of spirals whose nuclei exhibit high-excitation nebular emission lines superposed on the usual G-type absorption spectrum.
We are so excited in partnering with Nebular Agency, Flamingo House and Keenability as they host us in their creative cluster in Boca Raton," says Melissa Pacheco, Vice-President of the AAF Greater Fort Lauderdale & Palm Beaches.
Jupiter could only have acquired this wrapping during the solar nebular phase where planets were splitting from the disk and gathering mass to form planets.
My grandfather wore a sweat stained fedora,\ a red feather from a bantam rooster in the band,\ and the mule he commanded seemed not so much\ attached to the plow as arrayed in leather and hemp,\ intersecting rings, halter, belly band, and blinder,\ and nebular swarms of sweat bee, horse fly, bottle fly,\ and gnats like live particles of penance he hosted\ for the curse of being a mule.
Kids' games are another thing, pictures of games long gone back in the crab nebular of hopscotch, jacks, marbles and the like.
Observations of these exoplanets will allow us to understand the early stages of planetary and atmospheric formation during the nebular phase and the following few millions of years.
composition of nebular dust grains, and the "abundance discrepancy
Diante desse contexto, os objetivos do presente trabalho foram: i) conhecer a organizacao da comunidade arborea de um fragmento de floresta nebular no Planalto Catarinense, determinando-se sua composicao floristico-estrutural, assim como identificar as estrategias de dispersao de propagulos e a distribuicao espacial das especies arboreas encontradas no fragmento estudado; e ii) conhecer a estruturacao filogenetica da comunidade em pequena escala espacial.