1. an imaginary line that divides something into two equal halves
2. the central line of the human body that divides it into left and right halves
Usage: medical

1. located at or near the center line of something

Examples

• The surgeon made an incision along the patient’s midline.
• Draw a midline down the center of the page to divide it in half.
• The football player crossed the midline of the field.
• The midline incision healed well after the operation.
• Place the midline marker at the exact center of the court.
• The anatomist pointed to structures on either side of the body’s midline.