- (n.) Anything resembling mud or slush; as: (a) A muddy or slimy deposit from sweage. (b) Mud from a drill hole in boring. (c) Muddy sediment in a steam boiler. (d) Settling of cottonseed oil, used in making soap, etc. (e) A residuum of crude paraffin-oil distillation.
- (n.) See Slime, 4.
- (n.) Mud; mire; soft mud; slush.
- (n.) Small floating pieces of ice or masses of saturated snow.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Sludge. Retrieved October 2, 2026, from http://smartdefine.org/sludge/definitions/2063076 |
| Chicago | Webster's. 2011. "Sludge" http://smartdefine.org/sludge/definitions/2063076 (accessed October 2, 2026). |
| Harvard | Webster's 2011, Sludge, Smart Define, viewed 2 October, 2026, <http://smartdefine.org/sludge/definitions/2063076>. |
| MLA | Webster's. "Sludge" 28 May 2011. Web. 2 October 2026. <http://smartdefine.org/sludge/definitions/2063076> |