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
The accumulation of guano can cause the growth of the histoplasmosis fungus, which can cause severe respiratory problems in humans.
—
Alora Bopray,
USA Today,
24 June 2026
The lice live in dry caves and feed predominantly on bat guano.
—
Elizabeth Kolbert,
New Yorker,
22 June 2026
As late as the 19th century, the most reliable source of usable nitrogen was guano harvested from islands off the coast of Peru, a resource so valuable and rare that nations went to war over it.
—
Quanta Magazine,
29 May 2026
Their guano is mined from caves for fertilizer.
—
The Conversation,
Fortune,
14 May 2026
See All Example Sentences for guano
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Alora Bopray,
USA Today,
24 June 2026
The lice live in dry caves and feed predominantly on bat guano.
—
Elizabeth Kolbert,
New Yorker,
22 June 2026
As late as the 19th century, the most reliable source of usable nitrogen was guano harvested from islands off the coast of Peru, a resource so valuable and rare that nations went to war over it.
—
Quanta Magazine,
29 May 2026
Their guano is mined from caves for fertilizer.
—
The Conversation,
Fortune,
14 May 2026
See All Example Sentences for guano
Cite this Entry
“Guano.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/guano. Accessed 28 Jun. 2026.
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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