WordNet (r) 3.0 (2006):

uvulopalatopharyngoplasty
    n 1: surgical resection of unnecessary palatal and oropharyngeal
         tissue to open the airway; intended to cure extreme cases
         of snoring (with or without sleep apnea) [syn:
         palatopharyngoplasty, PPP, uvulopalatopharyngoplasty,
         UPPP]