| sedimentation coefficient [´sed·ǝ·mǝn`tā·shǝn ´kō·i`fish·ǝnt] PHYSICAL CHEMISTRY In the sedimentation of molecules in an accelerating field, such as that of a centrifuge, the velocity of the boundary between the solution containing the molecules and the solvent divided by the accelerating field.(In the case of a centrifuge, the accelerating field equals the distance of the boundary from the axis of rotation multiplied by the square of the angular velocity in radians per second.) |