Detritus is loose debris left behind after something breaks up. The detritus of the storm.
In geology it is broken rock and in ecology it is dead material that feeds everything else. The Latin behind it is rubbing away, which is exactly how it forms.
1noundetritusLoose debris left behind after something breaks up.
“The detritus of the festival took three days to clear.”
detritus is debris.
Latin detritus means something rubbed away, from deterere, to wear down.
Latin
dētrītus — (that which is) rubbed away
English, today
detritus
Built from
Latin dētrītus (“(that which is) rubbed away”), from dēterō (“rub away”).
Etymology from Wiktionary, CC BY-SA