guano
noun
gua·no
ˈgwä-(ˌ)nō 
: a fertilizer containing the accumulated excrement of seabirds or bats
broadly
: excrement especially of seabirds or bats
Examples of guano in a Sentence
Recent Examples on the Web
In Antarctica, the birds’ nutrient-rich guano allows mosses and other organisms to flourish in an otherwise inhospitable place.
—
Sarah Kuta, Smithsonian Magazine, 13 Mar. 2025
The team is also working on restoring the habitat across the island, which was stripped of all its vegetation during its time as an erstwhile guano mining spot.
—Tim Chester, AFAR Media, 17 Apr. 2025
According to the study, the guano’s byproducts accelerated the formation of clouds by 10,000 times.
—Sara Hashemi, Smithsonian Magazine, 27 May 2025
Finally, liquid bat guano and liquid earthworm castings (guano and castings are euphemisms for excrement) are also utilized for foliar fertilization.
—Joshua Siskin, Orange County Register, 14 Feb. 2025
See All Example Sentences for guano
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Sarah Kuta, Smithsonian Magazine, 13 Mar. 2025
The team is also working on restoring the habitat across the island, which was stripped of all its vegetation during its time as an erstwhile guano mining spot.
—Tim Chester, AFAR Media, 17 Apr. 2025
According to the study, the guano’s byproducts accelerated the formation of clouds by 10,000 times.
—Sara Hashemi, Smithsonian Magazine, 27 May 2025
Finally, liquid bat guano and liquid earthworm castings (guano and castings are euphemisms for excrement) are also utilized for foliar fertilization.
—Joshua Siskin, Orange County Register, 14 Feb. 2025
See All Example Sentences for guano
Cite this Entry
“Guano.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/guano. Accessed 21 Aug. 2025.
Copy CitationKids Definition
guano
noun
gua·no
ˈgwän-ō
: a substance composed chiefly of the excrement of seabirds or bats and used as a fertilizer
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