argillaceous
a. களிமண்ணால் ஆன.
Ar`gil*la"ceous, a. Etym: [L. argillaceus, fr. argilla.] Defn: Of the nature of clay; consisting of, or containing, argil or clay; clayey. Argillaceous sandstone (Geol.), a sandstone containing much clay. -- Argillaceous iron ore, the clay ironstone. -- Argillaceous schist or state. See Argillite.