Ar`e·na'ceous adjective [ Latin arenaceus , from arena sand.] Sandy or consisting largely of sand; of the nature of sand; easily disintegrating into sand; friable; as, arenaceous limestone. Found on http://www.encyclo.co.uk/webster/A/118
arenaceous 1. Used to describe rocks or deposits that are composed of sand grains or have a sandy texture. 2. A reference to plants that grow best in sandy soil. 3. Derived from or containing sand; having the properties of sand; growing in sand; sandy. 4. Resembling sand in texture, sandy, or gritty. Found on http://www.wordinfo.info/words/index/info/view_unit/11/