layer Copy link Outline I. A stratum or bed1. cŏrium2. tăbŭlātum, strātūraII. Of a plant, for propagation • layer: I. A stratum or bed: 1. cŏrium: to form a first, second l. (of a floor), primum, alterum, c. facere, Cato, R. R. 18, med.: Vitr. 2. tăbŭlātum, strātūra: Pall. 12, 7, med. (of manure). II. Of a plant, for propagation: prōpāgo, ĭnis, f.: Virg. G. 2, 26 Cic.