radial elution (radial development) or circular elution
in planar chromatography
of operation in which the sample is spotted at a point source at or near the middle
of the plane and is carried outward in a circle by the mobile phase, also applied
at that place.
PAC, 1993, 65, 819
(Nomenclature for chromatography (IUPAC Recommendations 1993))
on page 829