1. The act or process of crossing or intersecting in the form of an X; a crossing point or intersection.
Usage: Common in anatomy and neurology
2. In anatomy, the crossing of nerve fibers or tracts from one side of the body to the other, especially in the brain or spinal cord.
Usage: Medical/anatomical term
3. An arrangement or pattern of lines, structures, or elements that cross each other at angles, forming an X shape.
Usage: General usage

Examples

• The optic chiasm is a decussation where nerve fibers from each eye cross to the opposite side of the brain.
• The decussation of the pyramids in the medulla is where motor nerve fibers cross over.
• The architect designed the plaza with a decussation of pathways that created an elegant X pattern.
• In the spinal cord, the decussation of sensory fibers allows information from the left side of the body to reach the right hemisphere.
• The decussation of the two main roads created a busy intersection in the town center.
• Neurologists study the decussation of neural pathways to understand how the brain processes sensory information.
• The garden featured a decussation of hedgerows that divided it into four symmetrical sections.