Definition of botulinum toxin
: a neurotoxin formed by botulinum that causes botulism and that is injected in a purified form for therapeutic and cosmetic purposes (as to treat blepharospasm and reduce wrinkles)
First Known Use of botulinum toxin
Medical Definition of botulinum toxin
: a very powerful bacterial neurotoxin that acts primarily on the parasympathetic nervous system, is produced by botulinum, blocks release of acetylcholine at the neuromuscular junction, and causes botulism—often used with one of the letters A to G to designate one of seven distinct types; called also botulin
Variants of botulinum toxin
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