tetanospasmin

noun
tet·​a·​no·​spas·​min | \ˌtet-ᵊn-ō-ˈspaz-mən \

Medical Definition of tetanospasmin 

: a crystalline unstable neurotoxin produced by the tetanus bacillus and held to be the cause of the tetanic convulsions of tetanus

called also tetanus toxin

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