The Collaborative International Dictionary of English v.0.48:

Sedimentary \Sed`i*men"ta*ry\, a. [Cf. F. s['e]dimentaire.]
   Of or pertaining to sediment; formed by sediment; containing
   matter that has subsided.
   [1913 Webster]

   Sedimentary rocks. (Geol.) See Aqueous rocks, under
      Aqueous.
      [1913 Webster]