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Webster 1913 Edition
Arenaceous
Arˊe-na′ceous
,Adj.
 [L. 
arenaceus
, fr. arena 
sand.] Sandy or consisting largely of sand; of the nature of sand; easily disintegrating into sand; friable; 
as, 
. arenaceous 
limestoneWebster 1828 Edition
Arenaceous
ARENA'CEOUS
,Adj.
  1.
  Sandy; having the properties of sand.2.
  Brittle; as arenaceous limestone.