(n.) A member of the solar system which usually moves in an elongated orbit, approaching very near to the sun in its perihelion, and receding to a very great distance from it at its aphelion. A comet commonly consists of three parts: the nucleus, the envelope or coma, and the tail; but one or more of these parts is frequently wanting. See Illustration in Appendix.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). comet. Retrieved September 20, 2026, from http://smartdefine.org/comet/definitions/1989255 |
| Chicago | Webster's. 2011. "comet" http://smartdefine.org/comet/definitions/1989255 (accessed September 20, 2026). |
| Harvard | Webster's 2011, comet, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/comet/definitions/1989255>. |
| MLA | Webster's. "comet" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/comet/definitions/1989255> |