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Meaning of hyperthymia

hy•per•thy•mi•a

Pronunciation: (hī"pur-thī'mē-u), [key]
— n. Psychiatry.
  1. a condition characterized by extreme overactivity.
  2. exaggerated emotionalism.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.