1. chiasm

noun. an intersection or crossing of two tracts in the form of the letter X.


  • structure
  • complex body part
  • chiasma
  • body structure
  • optic chiasm
  • optic chiasma
  • decussation
  • bodily structure
  • chiasma opticum

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Sentences with chiasm

1. Noun, singular or mass
Some of the nerve signals from each eye are sent over to the other side of the brain at a part of the optic nerves called the optic chiasm.