[ kloh-nuh s ]
/ ˈkloʊ nəs /

noun, plural clo·nus·es. Pathology.

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

Origin of clonus

1810–20; < New Latin < Greek klónos turmoil Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for clonus

British Dictionary definitions for clonus

/ (ˈkləʊnəs) /


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

Derived forms of clonus

clonic (ˈklɒnɪk), adjectiveclonicity (klɒˈnɪsɪtɪ), noun

Word Origin for clonus

C19: from New Latin, from Greek klonos turmoil
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

Medical definitions for clonus

[ klōnəs ]

n. pl. clo•nus•es

A form of movement marked by contractions and relaxations of a muscle, occurring in rapid succession, after forcible extension or flexion of a part.clonospasm
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.