electrophoresis

This term describes a precise laboratory technique used primarily in biochemistry and molecular biology. It evokes an image of molecules migrating through a porous matrix, where smaller particles move faster than larger ones, creating a distinct pattern of bands. It is a technical term used in scientific papers, medical diagnostics, and academic settings. While it shares a root with electricity, the focus here is on the physical separation of substances based on their electrical charge and size. It is not used in casual conversation unless the speaker is discussing a specific scientific process or a medical test for proteins.