Search Result for "megalomania": 
Wordnet 3.0

NOUN (1)

1. a psychological state characterized by delusions of grandeur; 



The Collaborative International Dictionary of English v.0.48:

Megalomania \Meg`a*lo*ma"ni*a\, n. [NL., fr. megalo- + mania.]
   (Pathol.)
   A form of mental alienation in which the patient has
   grandiose delusions.
   [1913 Webster] megalomaniacal


WordNet (r) 3.0 (2006):

megalomania
    n 1: a psychological state characterized by delusions of
         grandeur