* Waste or debris from something that has decomposed or been broken down.
* The matter composed of fragments of dead organisms or other waste found in soil or at the bottom of a body of water.
Here are some examples:
* Detritus from the leaves that fell from the tree lay scattered on the ground.
* Detritus found in the ocean can range from tiny plankton to large pieces of plastic.
* Detritus is an important part of the ecosystem, providing nutrients for decomposers and other organisms.