- (n.) A pipe to conduct something downwards;.
- (n.) A pipe for leading the hot gases from the top of a blast furnace downward to the regenerators, boilers, etc.
- (n.) In some water-tube boilers, a tube larger in diameter than the water tubes to conduct the water from each top drum to a bottom drum, thus completing the circulation.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). downcomer. Retrieved September 20, 2026, from http://smartdefine.org/downcomer/definitions/2000265 |
| Chicago | Webster's. 2011. "downcomer" http://smartdefine.org/downcomer/definitions/2000265 (accessed September 20, 2026). |
| Harvard | Webster's 2011, downcomer, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/downcomer/definitions/2000265>. |
| MLA | Webster's. "downcomer" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/downcomer/definitions/2000265> |