compost
KOM-pohst
/ˈkɒmpɒst/
Decayed organic material used as a plant fertilizer; to convert organic waste into fertilizer.
Compost is distinct from simple soil or chemical fertilizer; it is a nutrient-rich, biologically active substance created by the controlled decomposition of organic matter.
The story behind the word. The Romans used the verb 'componere' to mean 'to put together' (which also gave us 'compose' and 'composition'). In medieval times, a 'compost' was a mixture of various ingredients, including a preserve of fruits or a mixture of soils. By the 17th century, it settled into its modern agricultural meaning of a rich mixture of decayed organic matter.
Word relationships
- humus: Humus is the fully decomposed, stable organic matter in soil, whereas compost is the human-managed product of decomposition.
- fertilizer: Fertilizer can be synthetic or chemical, whereas compost is strictly organic and improves soil structure, not just nutrient levels.
- pollutant: A substance that damages the soil, whereas compost enriches it.
Commonly confused with
- manure: Manure is specifically animal waste used as fertilizer, whereas compost is a mix of decayed plant matter and organic scraps.
Word family
- composting (noun): The process of recycling organic waste into fertilizer.
Collocations
- compost bin
- organic compost
- compost pile
- make compost
Example sentences
- "Adding compost to your vegetable garden improves soil structure and provides essential nutrients." Eco-friendly gardening advice
- "The city encourages residents to compost food scraps rather than throwing them in the trash." Municipal waste management
Memory hook
COMPOST is COMposed of POST-consumer food scraps. COMPOST = COMposed of POTS of scraps.
When not to use
Do not confuse compost with mulch. Compost is mixed into the soil to feed plants; mulch is laid on top of the soil to suppress weeds and retain moisture.
Fun facts
- A healthy compost pile can reach internal temperatures of up to 160°F (71°C) due to the intense metabolic activity of heat-loving bacteria.
Explore more words
Also appears in
- Nature → Pollution & Waste Management
- Food Science & Culinary Craft → Organic Farming Practices
- Food Science & Culinary Craft → Food Waste & Overconsumption
- Home & Domestic Life → Waste Management & Recycling
- Home & Domestic Life → Lawn Care & Landscaping
- Civic Life & Public Services → Municipal Waste & Sanitation
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