Source : Webster's Revised Unabridged Dictionary (1913)

Floating \Float"ing\, n.
   The process of rendering oysters and scallops plump by
   placing them in fresh or brackish water; -- called also
   {fattening}, {plumping}, and {laying out}.

Source : WordNet®

fattening
     adj : subject to or used in the process of finishing or fattening
           up for slaughter; "a fattening hog"; "fattening pens"