Webster’s Revised Unabridged Dictionary · 1913
Osteotomy
Os′te·ot′o·my (ŏs′tē·ŏt′ō·my̆), n. 1. The dissection or anatomy of bones; osteology.
2. (Surg.) The operation of dividing a bone or of cutting a piece out of it, — done to remedy deformity, etc.