IPA: /dɪˈtraɪtəl/
KK: /dɪˈtraɪtəl/
Relating to small pieces of material that have been broken down from larger rocks or minerals, often found in geological contexts.
The detrital sediments in the riverbed were formed from the erosion of nearby mountains.
Detrital → It is formed from "detritus" (from Latin *detritus*, meaning worn away or rubbed off) and the suffix "-al" (meaning pertaining to). The word "detrital" refers to material that has been worn away or eroded, particularly in a geological context.
Think of 'detritus' meaning worn away, and remember that 'detrital' describes things related to that worn material.