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( spazm)a sudden, violent, involuntary muscular contraction.a sudden transitory constriction of a...

an involuntary tonic contraction (cramp) of a muscle or group of muscles. Spasms may affect...

a sudden involuntary contraction of a muscle or group of muscles.a sudden but transitory...

/tet·a·nus/ ( tet´ah-nus)an acute, often fatal, infectious disease caused by a neurotoxin...

N. A falling of the head onto the chest that is most commonly seen in infants and is caused by the...