- (n.) A faint, cloudlike, self-luminous mass of matter situated beyond the solar system among the stars. True nebulae are gaseous; but very distant star clusters often appear like them in the telescope.
- (n.) A white spot or a slight opacity of the cornea.
- (n.) A cloudy appearance in the urine.
- (n.) A cloudy appearance in the urine.
- (n.) A faint, cloudlike, self-luminous mass of matter situated beyond the solar system among the stars. True nebulae are gaseous; but very distant star clusters often appear like them in the telescope.
- (n.) A white spot or a slight opacity of the cornea.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). nebula. Retrieved September 21, 2026, from http://smartdefine.org/nebula/definitions/2036091 |
| Chicago | Webster's. 2011. "nebula" http://smartdefine.org/nebula/definitions/2036091 (accessed September 21, 2026). |
| Harvard | Webster's 2011, nebula, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/nebula/definitions/2036091>. |
| MLA | Webster's. "nebula" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/nebula/definitions/2036091> |