Definitions for: Nebula

[n] (pathology) a faint cloudy spot on the cornea
[n] an immense cloud of gas (mainly hydrogen) and dust in interstellar space
[n] a medicinal liquid preparation intended for use in an atomizer
[n] cloudiness of the urine

Webster (1913) Definition: Neb"u*la, n.; pl. Nebul[ae]. [L., mist, cloud; akin
to Gr. ?, ?, cloud, mist, G. nebel mist, OHG. nebul, D.
nevel, Skr. nabhas cloud, mist. Cf. Nebule.]
1. (Astron.) A faint, cloudlike, self-luminous mass of matter
situated beyond the solar system among the stars. True
nebul[ae] are gaseous; but very distant star clusters
often appear like them in the telescope.

2. (Med.)
(a) A white spot or a slight opacity of the cornea.
(b) A cloudy appearance in the urine. [Obs.]

See Also: cloud, dapple, diffuse nebula, fleck, formulation, gaseous nebula, maculation, patch, planetary nebula, preparation, speckle, spot, symptom

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