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Definition of argillaceous
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< argil
argillite >
ar·gil·la·ceous
(är
j
-l
sh
s)
KEY
ADJECTIVE:
Containing, made of, or resembling clay; clayey.
ETYMOLOGY:
From Latin
argill
ceus
:
argilla
,
argil
; see
argil
+
-
ceus
,
-aceous
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