|a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells.|
|an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language.|
megalomania meg·a·lo·ma·ni·a (měg'ə-lō-mā'nē-ə, -mān'yə)
A psychopathological condition in which delusional fantasies of wealth, power, or omnipotence predominate.
An obsession with grandiose or extravagant things or actions.