The Collaborative International Dictionary of English v.0.48:

Glyceric \Gly*cer"ic\, a. (Chem.)
   Pertaining to, or derived from, glycerin.
   [1913 Webster]

   Glyceric acid (Chem.), an organic acid, obtained by the
      partial oxidation of glycerin, as a thick liquid. It is a
      hydroxyl derivative of propionic acid, and has both acid
      and alcoholic properties.
      [1913 Webster]

WordNet (r) 3.0 (2006):

glyceric acid
    n 1: a syrupy acid obtained by oxidation of glycerol or
         glyceraldehyde