(n.) That portion of the soil formed by the decomposition of animal or vegetable matter. It is a valuable constituent of soils.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). humus. Retrieved September 21, 2026, from http://smartdefine.org/humus/definitions/2017793 |
| Chicago | Webster's. 2011. "humus" http://smartdefine.org/humus/definitions/2017793 (accessed September 21, 2026). |
| Harvard | Webster's 2011, humus, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/humus/definitions/2017793>. |
| MLA | Webster's. "humus" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/humus/definitions/2017793> |