Wiktionary
n. a neurotoxic protein produced by the bacterium Clostridium botulinum
WordNet
n. any of several neurotoxins that are produced by the anaerobic bacterium Clostridium botulinum; causes muscle paralysis
Wikipedia
Botulinum toxin (BTX) is a neurotoxic protein produced by the bacterium Clostridium botulinum and related species. It is also produced commercially for medical, cosmetic, and research use. There are two main commercial types: botulinum toxin type A and botulinum toxin type B.
Infection with the bacterium may result in a potentially fatal disease called botulism. Botulinum is the most acutely lethal toxin known, with an estimated human median lethal dose (LD) of 1.3–2.1 ng/kg intravenously or intramuscularly and 10–13 ng/kg when inhaled.
Botulinum toxin types A and B are used in medicine for, among others, upper motor neuron syndrome, focal hyperhidrosis, blepharospasm, strabismus, chronic migraine and bruxism. It is also widely used in cosmetic treatments. The U.S. Food and Drug Administration requires a boxed warning stating that when locally administered the toxin may spread from the injection site to other areas of the body, causing botulism. The warning was the result of deaths associated with its uses. The commercial form is marketed under the brand name Botox, among others. Botox is made by Allergan.
Usage examples of "botulinum toxin".
After the Gulf War, Iraq admitted that it had built 50 CW missile warheads (filled with the nerve agent sarin) and 25 BW warheads (filled with botulinum toxin, anthrax, and aflatoxin).
To keep me from wrinkling the skin on my face, the team dermatologist has injected most of the muscles around my mouth and eyes with Botox, the botulinum toxin, to paralyze these muscles for the next six months.
The tests on several samples of Steve's blood revealed no trace of the botulinum toxin.
Were well below by a factor of ten the toxicity range of botulinum toxin, the most toxic substance known to man.