guano: meaning, definition, pronunciation and examples
C2Formal / Technical / Historical
Quick answer
What does “guano” mean?
The accumulated excrement of seabirds or bats, used as fertilizer.
Audio
Pronunciation
Definition
Meaning and Definition
The accumulated excrement of seabirds or bats, used as fertilizer.
Historically, a highly valuable natural fertilizer; can refer to similar animal waste (e.g., from seals) used for its nutrient content.
Dialectal Variation
British vs American Usage
Differences
No significant difference in denotation. The historical 'guano trade' is equally referenced in both varieties.
Connotations
In both, it carries connotations of historical commerce, organic gardening, and sometimes unpleasant odour. In American English, may have slightly stronger association with gardening supplies.
Frequency
Very low frequency in everyday speech in both varieties. Slightly higher frequency in historical, agricultural, or gardening contexts.
Grammar
How to Use “guano” in a Sentence
guano from [source, e.g., seabirds]guano on [location, e.g., the cliffs]guano of [animal, e.g., bats]fertiliser/fertilizer made from guanoVocabulary
Collocations
Examples
Examples of “guano” in a Sentence
verb
British English
- [No standard verb form in common use. Historical/technical: 'to guano' meaning to fertilise with guano is obsolete.]
American English
- [No standard verb form in common use.]
adverb
British English
- [No adverb form in use.]
American English
- [No adverb form in use.]
adjective
British English
- The guano-rich soil supported unique plant life.
- A guano mining licence was issued.
American English
- They used a guano-based fertilizer on the crops.
- The cave's guano deposits were centuries old.
Usage
Meaning in Context
Business
Historical context: the 19th-century guano trade was a major global industry. Modern: niche organic gardening product market.
Academic
Used in history (imperialism, trade), archaeology (analysis of deposits), ecology (nutrient cycling, island ecosystems), and agriculture (organic farming studies).
Everyday
Rare. Might be encountered in gardening discussions, historical documentaries, or trivia about unusual exports.
Technical
Specific term in agriculture for a type of organic fertilizer with high nitrogen and phosphate content; also in palaeoclimatology where guano layers are analysed.
Vocabulary
Synonyms of “guano”
Strong
Neutral
Weak
Vocabulary
Antonyms of “guano”
Watch out
Common Mistakes When Using “guano”
- Treating it as a countable noun (e.g., 'a guano' – incorrect; it's uncountable: 'some guano').
- Misspelling as 'guanoe' or 'guanuo'.
- Confusing it with 'guanaco' (a South American mammal).
FAQ
Frequently Asked Questions
Yes, primarily as an organic fertiliser in gardening and specialty agriculture, though its use is far less common than in the 19th century.
Before the invention of synthetic fertilisers, guano was one of the richest known sources of nitrogen and phosphates, essential for crop growth, making it a highly sought-after commodity.
Yes, they differ in nutrient composition and moisture content based on the animal's diet and environment. Bat guano from insect-eating bats is often higher in nitrogen, while seabird guano can be higher in phosphates.
Yes, when dry, inhaling dust from guano can cause a lung infection called histoplasmosis. Fresh guano should also be handled with care due to potential pathogens.
The accumulated excrement of seabirds or bats, used as fertilizer.
Guano is usually formal / technical / historical in register.
Guano: in British English it is pronounced /ˈɡwɑː.nəʊ/, and in American English it is pronounced /ˈɡwɑː.noʊ/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms. The word itself is highly specific.]”
Learning
Memory Aids
Mnemonic
Think: 'GUANO Grows Plants Amazingly, Naturally, Obviously!' It's the natural (and somewhat gross) boost for soil.
Conceptual Metaphor
GUANO IS A TREASURE / RESOURCE (historical metaphor of 'white gold' or 'brown gold' due to its economic value).
Practice
Quiz
What is 'guano' primarily known as?