• synonyms


[klon-ik, kloh-nik]
adjective Pathology.
  1. of or relating to clonus.
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Origin of clonic

First recorded in 1840–50; clon(us) + -ic
Related formsclo·nic·i·ty [kloh-nis-i-tee, klo-] /kloʊˈnɪs ɪ ti, klɒ-/, nounclon·ism [kloh-niz-uh m] /ˈkloʊ nɪz əm/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for clonic

Historical Examples

  • Convulsions are especially severe, at first tonic then clonic.

    New, Old, and Forgotten Remedies: Papers by Many Writers


  • However, the clonic nature of the spasm should prevent such an error.

    Lameness of the Horse

    John Victor Lacroix

  • Clonic, klon′ik, adj. pertaining to clonus, with alternate convulsive contractions and relaxations of the muscles (of spasms)—opp.

  • In both, the tonic with clonic convulsions were observed after a sufficient quantity of caffein was administered.

  • Eyelid tics (says Parinaud) are known to ophthalmologists as clonic blepharospasms.

clonic in Medicine


(klŏnĭk, klōnĭk)
  1. Of the nature of clonus, marked by contraction and relaxation of muscle.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.