
1) Convulsion 2) Medical sign
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https://www.crosswordclues.com/clue/clonus

Clonus (from the Greek for `violent, confused motion`) is a series of involuntary, rhythmic, muscular contractions and relaxations. Clonus is a sign of certain neurological conditions, particularly associated with upper motor neuron lesions involving descending motor pathways, and in many cases is, accompanied by spasticity (another form of hype.....
Found on
http://en.wikipedia.org/wiki/Clonus

• (n.) A series of muscular contractions due to sudden stretching of the muscle, -- a sign of certain neuropathies.
Found on
http://thinkexist.com/dictionary/meaning/clonus/

<neurology, physiology> A form of movement marked by contractions and relaxations of a muscle, occurring in rapid succession. ... (13 Nov 1997) ...
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http://www.encyclo.co.uk/local/20973

(klo´nәs) alternate involuntary muscular contraction and relaxation in rapid succession. a continuous rhythmic reflex tremor initiated by the spinal cord below an area of spinal cord injury, set in motion by reflex testing. ankle clonus , foot clonus ...
Found on
http://www.encyclo.co.uk/local/21001
Clo'nus noun [ New Latin , from Greek ... violent, confused motion.]
(Medicine) A series of muscular contractions due to sudden stretching of the muscle, -- a sign of certain neuropathies.
Found on
http://www.encyclo.co.uk/webster/C/94

Type: Term Pronunciation: klō′nŭs Definitions: 1. A form of movement marked by contractions and relaxations of a muscle, occurring in rapid succession seen with, among other conditions, spasticity and some seizure disorders.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=18244

Clonus is a rapidly alternating contraction and relaxation of muscles, resulting in violent tremors of part of a limb.
Found on
http://www.probertencyclopaedia.com/browse/EC.HTM

[
n] - convulsion characterized by alternating contractions and relaxations
Found on
http://www.webdictionary.co.uk/definition.php?query=clonus
noun convulsion characterized by alternating contractions and relaxations
Found on
https://www.encyclo.co.uk/local/20974

Spasm in which rigidity and relaxation alternate in rapid succession
Found on
https://www.encyclo.co.uk/local/23324

a rapid succession of flexions and extensions of a group of muscles, usually signifying an affection of the brain or spinal cord.
Found on
https://www.infoplease.com/dictionary/clonus
No exact match found.