Webster's English Dictionary

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sedimentary

sed.i.men.ta.ry \.sed-*-'ment-*-re-, -'men-tre-\ aj 1: of, relating to, or 
   containing sediment {~ deposits}  2: formed by or from deposits of sediment 
   : as  2a: formed of fragments of other rock transported from its source and 
   depo sited in water {sandstone and shale are ~ rocks} 2b: formed by 
   precipitation from solution {rock salt and gypsum are ~  rocks} 2c: formed 
   from secretions of organisms {limestone is ~ rock}