noun. a clonic spasm of a muscle or muscle group.
- muscle spasm
Example sentences of the word myoclonus
1. Noun, singular or mass
Dogs who have recovered from distemper may suffer from distemper myoclonus later in life.
2. Foreign word
According to the National Institute of Neurological Disorders and Stroke (NINDS), myoclonus is a sudden jerking of a muscle.