[kat-uh-toh-nee-uh, -tohn-yuh]
noun Psychiatry.
a syndrome seen most frequently in schizophrenia, characterized by muscular rigidity and mental stupor, sometimes alternating with great excitement and confusion.

1915–20; cata- + -tonia

catatoniac, noun
catatonic [kat-uh-ton-ik] , adjective, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
catatonia (ˌkætəˈtəʊnɪə)
a state of muscular rigidity and stupor, sometimes found in schizophrenia
[C20: New Latin, from German Katatonie, from cata- + -tonia, from Greek tonos tension]
adj, —n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1888, from Mod.L. catatonia (see catatonic).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

catatonia cat·a·to·ni·a (kāt'ə-tō'nē-ə)
An abnormal condition often associated with schizophrenia and variously characterized by stupor, stereotypy, mania, and either rigidity or extreme flexibility of the limbs.

cat'a·ton'ic (-tŏn'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
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