Characterized by the presence of clay; full of or abounding in clay; composed of, or of the nature of clay; argillaceous.

Of clay, as a material; clay-.

= argillous, adj.

Clayey, argillaceous.

attributive or as adj. Made or consisting of clay (literal, or in sense 4).

More or less clayey.

Of the nature of clay; largely composed of clay; clayey.

Abounding in, or of the nature of, till or tenacious clay.

Of a stratum or series of strata: consisting chiefly of clay. Cf. psammolithic adj. at psammo-, comb._form affix.