Definition

1. Noun:
   • A serious bacterial disease: Tetanus is an acute, often fatal disease caused by the toxin of the bacterium Clostridium tetani, which enters the body through a wound. It is characterized by rigidity and spasms of the voluntary muscles, especially of the jaw (lockjaw) and neck.
   • A state of sustained muscular contraction: In physiology, tetanus refers to a continuous, forceful muscular contraction caused by a rapid series of nerve impulses, as opposed to a single twitch.

Usage and Examples

• Medical context (disease):
  • A deep puncture wound carries a high risk of tetanus.
  • Vaccination provides effective protection against tetanus.
• Physiological context (muscle contraction):
  • In the laboratory, electrical stimulation can induce tetanus in an isolated muscle fiber.

Advanced Usage

• "Tetanus toxoid": The inactivated form of the toxin used in vaccines to induce immunity.
  • The DTaP vaccine includes tetanus toxoid to prevent the disease.
• "Tetanic contraction": A synonym for the physiological state of sustained muscle contraction.
  • The muscle exhibited a tetanic contraction when stimulated at a high frequency.

Variants and Related Words

• Tetanic (adj): Relating to or characteristic of tetanus (the disease or the muscle state).
  • The patient showed tetanic spasms.
• Tetanize (verb): To induce a state of tetanic contraction.
  • The experiment aimed to tetanize the muscle tissue.

Synonyms

• Lockjaw: A common name for tetanus, referring to its characteristic symptom of jaw muscle spasms.
• Trismus: The medical term for lockjaw or spasm of the jaw muscles, a key symptom of tetanus.

Related Phrases and Terms

• Tetanus shot/booster: Informal terms for a tetanus vaccine or a booster dose.
  • After stepping on a rusty nail, he went to the clinic for a tetanus shot.
• Neonatal tetanus: A form of tetanus in newborn infants, often due to unsterile treatment of the umbilical cord.
  • Neonatal tetanus remains a significant cause of infant mortality in some regions.

Noun

1. a sustained muscular contraction resulting from a rapid series of nerve impulses
2. an acute and serious infection of the central nervous system caused by bacterial infection of open wounds; spasms of the jaw and laryngeal muscles may occur during the late stages