Source : Webster's Revised Unabridged Dictionary (1913)

Uranoplasty \U"ra*no*plas`ty\, n. [See {Uraniscoplasty}.]
   (Surg.)
   The plastic operation for closing a fissure in the hard
   palate.

Source : WordNet®

uranoplasty
     n : surgical correction of a defect of the palate