Elutriation is a specialized term used in the field of mineral processing, where it refers to the process of separating particles based on their size and density using fluid flow and gravity. Some synonyms for elutriation that can be used in this context include sedimentation, separation, and fractionation. Other potential synonyms might include classification, sorting, and filtration, as all of these terms relate to the process of separating particles or materials based on one or more physical properties. Ultimately, the specific synonym used will depend on the context and the exact nature of the separation process being carried out.