tonic-clonic

ton·ic–clon·ic

adj \ˈtän-i(k)-ˈklä-nik\

Definition of TONIC-CLONIC

: relating to, marked by, or being a generalized seizure that is initially tonic and then becomes clonic and is characterized by the abrupt loss of consciousness <tonic–clonic epilepsy> <tonic–clonic seizures>