A psychological condition marked by severe decreases or increases of movement. It is variously characterized by stupor, stereotypy, mutism, catalepsy, agitation, and extreme flexibility or rigidity of the limbs and is most often associated with schizophrenia.
[New Latin, from German Katatonie, from Greek katatonos, stretching tight, from katateinein, to stretch tight : kata-, intensive pref.; see CATA- + teinein, to stretch; see ten- in the Appendix of Indo-European roots.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.