saltatory spasm
n.
A spasmodic affliction of the muscles of the lower extremities that causes a person to appear to jump when standing.
static convulsion
Words nearby saltatory spasm
seismic,
seismic array,
seismic gap,
seismic wave,
seismic waves,
saltatory spasm,
seismism,
seismo-,
seismogram,
seismograph,
seismography