Source : Webster's Revised Unabridged Dictionary (1913)

Syncarpous \Syn*car"pous\, a. [Pref. syn- + Gr. ? a fruit.]
   (Bot.)
   Composed of several carpels consolidated into one ovary.

Source : WordNet®

syncarpous
     adj : (of ovaries of flowering plants) consisting of united
           carpels [ant: {apocarpous}]