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Definition of Liesegang rings
1. Noun. (context: chemistry geology) Secondary rings or bands resulting from rhythmic precipitation in a gel, or within a fluid-saturated rock. ¹
¹ Source: wiktionary.com
Medical Definition of Liesegang rings
1. Coloured ring's of precipitated silver chromate formed when a drop of concentrated silver nitrate is added to the surface of a gel (such as gelatin, agar, or silica gel) containing potassium dichromate. (05 Mar 2000)