Hypertext Webster Gateway: "Argillaceous"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Argillaceous \Ar`gil*la"ceous\, a. [L. argillaceus, fr.
argilla.]
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}.
From WordNet (r) 1.7 (wn)
argillaceous
adj : resembling or containing clay; "argillaceous rocks" [syn: {clayey}]
[ant: {arenaceous}]
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