ganglion

/ˈɡæŋɡliən/
noun
  1. A small, harmless lump or cyst that forms on or near a tendon or joint, often on the wrist or hand.
    • He noticed a ganglion forming near his knuckle after months of typing.
    • The doctor said the ganglion on her wrist was not dangerous and might go away on its own.
    • A ganglion can sometimes be drained with a needle if it becomes painful.
  2. A group of nerve cells located outside the brain and spinal cord that helps control body functions.
    • Injuries to a ganglion can cause numbness or weakness in the affected area.
    • The dorsal root ganglion carries sensory information from the body to the spinal cord.
    • Each ganglion in the autonomic nervous system regulates involuntary actions like digestion.
Synonyms
What does "ganglion" mean? | whatsthatwordmean | whatsthatwordmean