noun Etymology: New Latin Date: 1887 a mania for great or grandiose performance, a delusional mental disorder that is marked by feelings of personal omnipotence and grandeur, ~c adjective or noun ~cal also megalomanic adjective ~cally adverb
MEGALOMANIA
Meaning of MEGALOMANIA in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012