arenaceous

from WordNet (r) 3.0 (2006)

arenaceous
    adj 1: resembling or containing or abounding in sand; or growing
           in sandy areas; "arenaceous limestone"; "arenaceous
           grasses" [syn: {arenaceous}, {sandy}, {sandlike}] [ant:
           {argillaceous}, {clayey}]

from The Collaborative International Dictionary of English v.0.48

Arenaceous \Ar`e*na"ceous\, a. [L. arenaceus, fr. arena sand.]
   Sandy or consisting largely of sand; of the nature of sand;
   easily disintegrating into sand; friable; as, arenaceous
   limestone.
   [1913 Webster]

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