Why was "tantrum" trending last week?


[hahy-per-ki-nee-zhuh, -zhee-uh, -zee-uh, -kahy-] /ˌhaɪ pər kɪˈni ʒə, -ʒi ə, -zi ə, -kaɪ-/
Pathology. an abnormal amount of uncontrolled muscular action; spasm.
Psychiatry. a disorder occurring in children and adolescents, characterized by excessive activity, extreme restlessness, impulsivity, and a short attention span.
Also, hyperkinesis
[hahy-per-ki-nee-sis, -kahy-] /ˌhaɪ pər kɪˈni sɪs, -kaɪ-/ (Show IPA)
1840-50; hyper- + -kinesia
Related forms
[hahy-per-ki-net-ik, -kahy-] /ˌhaɪ pər kɪˈnɛt ɪk, -kaɪ-/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
British Dictionary definitions for hyperkinesia


/ˌhaɪpəkɪˈniːzɪə; -kaɪ-/
noun (pathol)
excessive movement, as in a muscle spasm
extreme overactivity in children
Derived Forms
hyperkinetic (ˌhaɪpəkɪˈnɛtɪk; -kaɪ-) adjective
Word Origin
C20: from hyper- + -kinesia from Greek kinēsis movement, from kinein to move
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
hyperkinesia in Medicine

hyperkinesia hy·per·ki·ne·sia (hī'pər-kə-nē'zhə, -kī-) or hy·per·ki·ne·sis (-sĭs)
Pathologically increased muscular movement.

hy'per·ki·net'ic (-nět'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Encyclopedia Article for hyperkinesia

in dogs, a disorder in which muscle spasms are prominent. It is usually associated with distemper, encephalitis, or other diseases and often appears during the convalescent period. Jaw spasms may interfere with eating, and extreme exhaustion follows severe episodes in which the dog cannot sleep. Treatment involves good nutrition, vitamin supplements, and sedation. Antispasmodic drugs and muscle relaxants are used to relieve the symptoms.

Learn more about hyperkinesia with a free trial on
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Difficulty index for hyperkinesia

Few English speakers likely know this word

Word Value for hyperkinesia

Scrabble Words With Friends