wisdom-tooth

Definition

Noun: A wisdom tooth is the third and final molar tooth on each side of the upper and lower jaw in humans. These teeth typically emerge in late adolescence or early adulthood, usually between the ages of 17 and 25. The name "wisdom tooth" derives from the idea that this eruption occurs at a more mature age, when a person is considered wiser than in childhood.

Usage Examples

• (The third molar is growing at an angle and causing problems.)
• (The tooth is emerging from the gum tissue.)
• (All of her third molars were surgically removed.)

Advanced Usage

• "wisdom tooth extraction": a common dental surgery to remove one or more wisdom teeth.
  • Recovery from wisdom tooth extraction usually takes a few days. (The healing period after removal of the third molars.)
• "impacted wisdom tooth": a wisdom tooth that does not fully emerge through the gum or grows at an angle, often causing pain or infection.
  • An impacted wisdom tooth can damage neighbouring teeth if left untreated. (A trapped third molar can harm adjacent molars.)

Variants and Related Words

• Wisdom teeth (plural noun): all four third molars collectively.
  • His wisdom teeth came in without any problems. (All of his third molars erupted normally.)
• Molar (noun): any of the large teeth at the back of the mouth used for grinding food.
  • The wisdom tooth is the last molar in the dental arch. (It is the final grinding tooth.)

Synonyms

• Third molar: the technical dental term for a wisdom tooth.
  • The third molar often causes crowding in the mouth. (The wisdom tooth can push other teeth out of alignment.)
• Eight-year-old molar: an informal, less common term referring to the age when wisdom teeth typically erupt.

Related Idioms

• "Cut your wisdom teeth": (rarely used with the literal tooth) to gain experience or become knowledgeable in a particular area.
  • He cut his wisdom teeth in the world of finance. (He gained early experience and expertise in finance.)