meg·a·lo·ma·ni·a (mĕg'ə-lō-mā'nē-ə, -mān'yə)
n.

1. A psychopathological condition characterized by delusional fantasies of wealth, power, or omnipotence.
2. An obsession with grandiose or extravagant things or actions.

megalomaniac meg'a·lo·ma'ni·ac' n.
megalomaniacal meg'a·lo·ma·ni'a·cal (-mə-nī'ə-kəl) or meg'a·lo·man'ic (-măn'ĭk) adj.

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The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

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