sedimentation
depositing / withdrawal of particles from fluids or gases under the influence of gravity or the centrifugal force
en-GB/ˌsɛdɪmənˈteɪʃən/
en-US/ˌsɛdəmənˈteɪʃən/
depositing / withdrawal of particles from fluids or gases under the influence of gravity or the centrifugal force