Medical Dictionary
Main Entry:
val·vu·lot·o·my Pronunciation:
"val-vy&-'lät-&-mE Function:
noun Inflected Form:
plural -mies : surgical incision of a valve;
specifically : the operation of enlarging a narrowed heart valve by cutting through the mitral commissures with a knife or by a fingerthrust to relieve the symptoms of mitral stenosis
[val-vyuh-lot-uh-mee] 
vyəˈlɒt