Dictionary![]() ![]() cat•a•to•ni•aPronunciation: (kat"u-tō'nē-u, -tōn'yu), [key] —n. Psychiatry. a syndrome seen most frequently in schizophrenia, characterized by muscular rigidity and mental stupor, sometimes alternating with great excitement and confusion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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