IPA: /ˌsɛdɪˈmɛnˌteɪʃən/
KK: /sɛdɪˈmenˌteɪʃən/
The process of settling or depositing particles, such as soil or minerals, from a liquid to form layers.
Sedimentation occurs when particles in water settle to the bottom over time.
Sedimentation → It is formed from "sediment" (from Latin "sedimentum", meaning settling or to settle) and "-ation" (meaning the process of). The word "sedimentation" refers to the process of settling or the accumulation of sediment.
Think of the process of materials 'settling' ('sediment') at the bottom of a body of water, which is what sedimentation describes.