[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.
excessive movement, as in a muscle spasm
extreme overactivity in children
1880, from hyper- + kinetic. Perhaps immediately from French hyperkinetic (1874). Related: Hyperkinesis.
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.
- Hyperkinetic syndrome
hyperkinetic syndrome n. A childhood or adolescent disorder characterized by excessive activity, emotional instability, significantly reduced attention span, and an absence of shyness and fear, and that occasionally develops in individuals with brain injury, mental defect, or epilepsy.
noun education made possible by computer technology and hypermedia Usage Note computing
[lee-thuh l] /ˈli θəl/ adjective 1. of, relating to, or causing death; deadly; fatal: a lethal weapon; a lethal dose. 2. made or carried out to cause death: a lethal chamber; a lethal attack. 3. causing great harm or destruction: The disclosures were lethal to his candidacy. /ˈliːθəl/ adjective 1. able to cause or causing […]
hyperleukocytosis hy·per·leu·ko·cy·to·sis (hī’pər-lōō’kə-sī-tō’sĭs) n. An unusually large increase in number and proportion of white blood cells in blood or tissues.