• WordNet 3.6
    • n clonus convulsion characterized by alternating contractions and relaxations
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Webster's Revised Unabridged Dictionary
    • n Clonus (Med) A series of muscular contractions due to sudden stretching of the muscle, -- a sign of certain neuropathies.
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Century Dictionary and Cyclopedia
    • n clonus In pathology, alternating contractions and relaxations of a muscle following one another in somewhat quick succession. See clonic spasm and ankle-clonus.
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Chambers's Twentieth Century Dictionary
    • n Clonus a clonic spasm
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Webster's Revised Unabridged Dictionary
NL., fr. Gr. klo`nos violent, confused motion
Chambers's Twentieth Century Dictionary


In literature:

There is an attempt at, but no true, clonus; that is, passive flexion of the foot causes two or three jerky movements.
"Anomalies and Curiosities of Medicine" by George M. Gould
Both deep and superficial reflexes exaggerated; ankle clonus both sides; hyperaesthesia of abdomen and face.
"Studies in Forensic Psychiatry" by Bernard Glueck
Quite analogous to this is the ankle-clonus.
"A System of Practical Medicine by American Authors, Vol. I" by Various
Knee jerks were very active, almost a clonus.
"Barium, A Cause of the Loco-Weed Disease" by Albert Cornelius Crawford