affected by involuntary jerky muscular contractions; resembling a spasm
<adj.all> convulsive motions his body made a spasmodic jerk spastic movements
occurring in spells and often abruptly
<adj.all> fitful bursts of energy spasmodic rifle fire
Spasmodic \Spas"mod"ic\, a. [Gr. ?; ? a convulsion + ? likeness: cf. F. spasmotique.] 1. (Med.) Of or pertaining to spasm; consisting in spasm; occuring in, or characterized by, spasms; as, a spasmodic asthma.
2. Soon relaxed or exhausted; convulsive; intermittent; as, spasmodic zeal or industry.
{Spasmodic croup} (Med.), an affection of childhood characterized by a stoppage of brathing developed suddenly and without fever, and produced by spasmodic contraction of the vocal cords. It is sometimes fatal. Called also {laryngismus stridulus}, and {childcrowing}.
{Spasmodic stricture}, a stricture caused by muscular spasm without structural change. See {Organic stricture}, under {Organic}.
Spasmodic \Spas*mod"ic\, n. (Med.) A medicine for spasm.