# detritus

/ˈdɛtɹətəs/ (US) · /dɪtɹˈaɪtəs/ (UK)

Source: https://englishreference.com/word/detritus
Updated: 2026-08-08

## Senses

### 1. general debris

noun · CEFR C1 · Formal · Literary

the small pieces of rubbish or waste that are left behind after an event or when something breaks.

For teachers: any debris or fragments of disintegrated material. Often used in a literary or formal register to describe the remains of human activity.

- The streets were covered in the detritus of the festival, including plastic cups and torn posters.
- After the floodwaters finally receded, the residents were left to clear the thick layer of detritus that had settled in their gardens.

Usage: Usually uncountable when referring to a mass of waste.

### 2. organic waste

noun · CEFR C2 · Technical · Academic

dead leaves, plants, and animal waste that are breaking down in nature.

For teachers: organic waste material consisting of decomposing plants or animals. This material provides essential nutrients for many small organisms in an ecosystem.

- Crabs and small fish often feed on the detritus found at the bottom of the ocean.
- The forest floor is a complex layer of detritus where fungi and bacteria work to recycle nutrients back into the soil.

Usage: Uncountable in a biological context.

### 3. rock fragments

noun · CEFR C2 · Technical

small pieces of rock that have been broken off by ice, water, or wind.

For teachers: fragments of rock produced by erosion or weathering. It can also refer to rock formed from the accumulation of such debris.

- The glacier left behind a trail of rocky detritus as it moved down the mountain.
- Geologists analysed the detritus at the base of the cliff to determine the rate of coastal erosion over the last century.

## Examples

- The river carries away the detritus of the forest.
- After the festival ended, the streets were covered in the detritus of balloons, confetti, and empty bottles.
- The geologist examined the detritus of the ancient mountain range, noting how the mineral composition had changed as the rock was worn down by centuries of erosion.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.