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clonus

American  
[kloh-nuhs] / ˈkloʊ nəs /

noun

Pathology.
clonuses plural
  1. a rapid succession of flexions and extensions of a group of muscles, usually signifying an affection of the brain or spinal cord.


clonus British  
/ ˈklɒnɪk, klɒˈnɪsɪtɪ, ˈkləʊnəs /

noun

  1. a type of convulsion characterized by rapid contraction and relaxation of a muscle

"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

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Etymology

Origin of clonus

1810–20; < New Latin < Greek klónos turmoil

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Example Sentences

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No foot clonus, no Babinski; abdominal reflexes present, cremasteric not elicited; catalepsy not always present.

From Studies in Forensic Psychiatry by Glueck, Bernard

Both deep and superficial reflexes exaggerated; ankle clonus both sides; hyperæsthesia of abdomen and face.

From Studies in Forensic Psychiatry by Glueck, Bernard

The knee-jerks and plantar reflexes are exaggerated, and there is marked ankle clonus.

From Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. by Miles, Alexander

Tapping of one knee tended to set musculature of opposite knee in mild clonus of short duration.

From Studies in Forensic Psychiatry by Glueck, Bernard

There is an attempt at, but no true, clonus; that is, passive flexion of the foot causes two or three jerky movements.

From Anomalies and Curiosities of Medicine by Pyle, Walter L. (Walter Lytle)

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