Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun detritus

2 senses of detritus

Sense 1
debris, dust, junk, rubble, detritus -- (the remains of something that has been destroyed or broken up)
       => rubbish, trash, scrap -- (worthless material that is to be disposed of)

Sense 2
detritus -- (loose material (stone fragments and silt etc) that is worn away from rocks)
       => material, stuff -- (the tangible substance that goes into the makeup of a physical object; "coal is a hard black material"; "wheat is the stuff they use to make bread")