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n. Astronomy A diffuse mass 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 radiation.

n. Astronomy See galaxy.

n. Pathology A cloudy spot on the cornea.

n. Pathology Cloudiness in the urine.

n. A liquid medication applied by spraying.

n. A cloud in outer space consisting of gas or dust (e.g. a cloud formed after a star explodes).

n. A white spot or slight opacity of the cornea.

n. A cloudy appearance in the urine

n. A faint, cloudlike, self-luminous mass of matter situated beyond the solar system among the stars. The term was originally applied to any diffuse luminous region. Now, technically, it is applied to interstellar clouds of dust and gases (diffuse nebula). However distant galaxies and very distant star clusters often appear like them in the telescope, such as the spiral nebula in Andromeda, known now to be a distant galaxy.

n.

n. A white spot or a slight opacity of the cornea.

n. A cloudy appearance in the urine.

n. A luminous patch in the heavens, far beyond the limits of the solar system.

n. In pathology, a cloud-like spot on the cornea.

n. cloudiness of the urine

n. (pathology) a faint cloudy spot on the cornea

n. a medicinal liquid preparation intended for use in an atomizer

n. an immense cloud of gas (mainly hydrogen) and dust in interstellar space

"And yet the work of Fabry and Buisson, which has been verified by Professor Frost at the Yerkes Observatory, shows that the nebula is a seething mass of gaseous matter where there is no rest and over whose vast bulk relative motions of several miles a second are constantly, taking place."

symptom    dapple    maculation    speckle    fleck    patch    spot    preparation    formulation   

horseshoe nebula    whirlpool nebula    nebular hypothesis    cometary nebula    resolvable nebula    stellar nebula    fish-mouth nebula    variable nebula    green nebula    omega nebula   

nebular    nebulous    nebulosity   

nebulae    diffuse nebula   

spiral nebula   

solar nebula    preplanetary nebula    dark nebula    emission nebula    protoplanetary nebula    stellar nebula    planetary nebula    reflection nebula    diffuse nebula   

nebulae    galaxy    fireball    comet    whirlpool    pinpoint    constellation    orb    nebulosity    archipelago