noun see: hold Date: 1817 a rapid succession of alternating contractions and partial relaxations of a muscle occurring in some nervous diseases, clonic adjective clonicity noun
CLONUS
Meaning of CLONUS in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012