cingulum

/ˈsɪŋɡjələm/
noun
  1. A curved bundle of nerve fibers in the brain that connects parts of the limbic system.
    • Researchers mapped the cingulum to better understand its function in learning.
    • The cingulum plays a key role in communication between different brain regions.
    • Injuries to the cingulum can disrupt memory and emotional processing.
  2. A raised band or ridge on a tooth, especially near the base of the crown.
    • A prominent cingulum is common on the upper incisors of many mammals.
    • The dentist pointed out the cingulum on my front tooth during the checkup.
    • The cingulum helps strengthen the tooth where it meets the gum.
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