Definition

Noun: A toxoid is a bacterial toxin that has been treated (usually with heat or chemicals) to destroy its toxic properties while retaining its ability to stimulate the immune system to produce protective antibodies.

Usage

A toxoid is used in vaccines to provide immunity against diseases caused by specific bacterial toxins. It is administered via injection.

Examples

• The toxoid in the tetanus vaccine safely teaches the body to fight the real toxin.
• Vaccination with diphtheria toxoid has made the disease very rare in many countries.
• Scientists developed a toxoid to create a safer vaccine.

Advanced Usage

• Toxoid-antitoxin mixture: A historical vaccine formulation containing both a toxoid and its corresponding antitoxin (antibodies).
  • Early toxoid-antitoxin mixtures were less refined than modern vaccines.

Variants and Related Words

• Anatoxin: Another term for toxoid, meaning "without toxicity."
• Toxoid vaccine: The final medicinal product containing the toxoid as its active ingredient.

Synonyms

• Inactivated toxin
• Detoxified toxin

Related Phrases

• Toxoid immunity: The state of protection conferred by a toxoid vaccine.
  • The booster shot is necessary to maintain toxoid immunity.

Noun

1. a bacterial toxin that has been weakened until it is no longer toxic but is strong enough to induce the formation of antibodies and immunity to the specific disease caused by the toxin
   • diphtheria toxoid