argilloferruginous

== English == === Alternative forms === argillo-ferruginous === Etymology === From Ancient Greek ἄργιλλος (árgillos, “clay”) + ferruginous. === Adjective === argilloferruginous (comparative more argilloferruginous, superlative most argilloferruginous) (soil science) Containing clay and iron. === References === “Argillo-ferruginous”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.