- Pertaining to feelings of great importance, expansiveness, or delusions of grandeur. [It. grandioso, fr. L. grandis, large]
* * *gran·di·ose 'gran-dē-.ōs, .gran-dē-' adj characterized by affectation of grandeur or splendor or by absurd exaggeration <a paranoid patient with \grandiose delusions>gran·di·ose·ly adv
* * *gran·di·ose (granґde-ōs″) in psychiatry, pertaining to exaggerated beliefs or claims of one's importance or identity, often manifested by delusions of great wealth, power, or fame.
Medical dictionary. 2011.