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clonus Syllabification: clo·nus
Pronunciation: /ˈklōnəs/

Definition of clonus in English:


Muscular spasm involving repeated, often rhythmic, contractions.
Example sentences
  • Medication is indicated when stiffness, spasms, or clonus interferes with function or sleep.
  • Physical examination revealed left ankle clonus, positive Babinski sign on the left, and left lower extremity weakness.
  • The patient should be tested for deep tendon reflexes and clonus.


Pronunciation: /ˈklänik/
Example sentences
  • All 15 patients had generalised rhythmic myoclonic ‘seizures’ but eight had also had focal clonic episodes affecting various sites.
  • A two-year-old girl presented with a generalized seizure with tonic - clonic movements of all extremities.
  • Occasionally, mild clonic seizures occur, but a seizure work-up is not indicated unless other signs point in this direction.


Early 19th century: from Greek klonos 'turmoil'.

Definition of clonus in:
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