(n.) A substance found in great abundance on some coasts or islands frequented by sea fowls, and composed chiefly of their excrement. It is rich in phosphates and ammonia, and is used as a powerful fertilizer.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). guano. Retrieved September 20, 2026, from http://smartdefine.org/guano/definitions/2014003 |
| Chicago | Webster's. 2011. "guano" http://smartdefine.org/guano/definitions/2014003 (accessed September 20, 2026). |
| Harvard | Webster's 2011, guano, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/guano/definitions/2014003>. |
| MLA | Webster's. "guano" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/guano/definitions/2014003> |