toxoid


tox·oid

noun \ˈtäk-ˌsid\

Definition of TOXOID

:  a toxin of a pathogenic organism treated so as to destroy its toxicity but leave it capable of inducing the formation of antibodies on injection

Origin of TOXOID

International Scientific Vocabulary
First Known Use: circa 1894

tox·oid

noun \ˈtäk-ˌsid\   (Medical Dictionary)

Medical Definition of TOXOID

: a toxin of a pathogenic organism treated so as to destroy its toxicity but leave it capable of inducing the formation of antibodies on injection <diphtheria toxoid>—called also anatoxin

toxoid

noun    (Concise Encyclopedia)

Bacterial toxin that has been made inactive but can still combine with or stimulate formation of antibodies. In many bacterial diseases, the bacteria produce a toxin that causes the disease manifestations. Heating the toxin or treating it chemically converts it into a harmless toxoid that can be injected into a human or a nonhuman animal to confer immunity from subsequent infection. The vaccines for tetanus and diphtheria are toxoids.

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