'Sedimentation' definitions:

Definition of 'sedimentation'

From: WordNet
noun
The phenomenon of sediment or gravel accumulating [syn: deposit, sedimentation, alluviation]

Definition of 'Sedimentation'

From: GCIDE
  • Sedimentation \Sed`i*men*ta"tion\, n. The act of depositing a sediment; specifically (Geol.), the deposition of the material of which sedimentary rocks are formed. [1913 Webster]