biodegradable
by-oh-di-GRAY-duh-buhl
/ˌbaɪ.oʊ.dɪˈɡreɪ.də.bəl/
Capable of being decomposed by bacteria or other living organisms into non-toxic natural elements.
Emphasizes that organic decay happens naturally without leaving persistent chemical toxins behind.
The story behind the word. Coined in the mid-20th century by combining Greek 'bio-' (living organisms) with 'degrade' (from Latin 'degradare', to step down). It describes breaking down complex molecules step-by-step through living organisms.
Word relationships
- compostable: Compostable items break down into nutrient-rich humus within specific composting conditions, whereas biodegradable matter breaks down in nature over variable timeframes.
- perishable: Perishable refers to food spoiling quickly, whereas biodegradable refers to material breakdown by microbes.
- non-biodegradable: Incapable of being broken down by natural biological processes.
- persistent: Remaining unchanged in the environment for very long periods.
Commonly confused with
- recyclable: Recyclable means matter can be processed mechanically to make new items; biodegradable means living microbes naturally break it down.
Word family
- biodegradability (noun): The capacity to be decomposed by biological agents.
- biodegrade (verb): To decompose through biological activity.
Collocations
- biodegradable packaging
- biodegradable plastic
- readily biodegradable
Example sentences
- "The grocery store replaced plastic bags with fully biodegradable cornstarch alternatives." Packaging design
- "Using biodegradable food containers drastically reduces long-term solid waste pollution." Environmental policy
Memory hook
BIO (life) + DEGRADE (step down) = life steps it down to natural elements. Nature's microbes stepping down waste into soil.
When not to use
Do not use for materials like synthetic plastics or toxic heavy metals that persist for centuries.
Fun facts
- Even biodegradable materials need oxygen and moisture; wrapped tightly inside an airtight landfill, banana peels can take decades to decompose!
Related words
Explore more words
decomposer, renewable, degradation, degenerative, sustainable, biomass
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