Source : Webster's Revised Unabridged Dictionary (1913)

Oophorectomy \O`["o]*pho*rec"to*my\, n. [Gr. w,'o`n egg + ? to
   bear + ? a cutting out.] (Surg.)
   Ovariotomy.

Source : WordNet®

oophorectomy
     n : surgical removal of one of both ovaries [syn: {ovariectomy}]