1. plural of midline; imaginary lines that divide something into two equal halves, especially the human body
Usage: medical; anatomical

Examples

• The surgeon carefully marked the midlines on the patient’s chest before the operation.
• In anatomy class, we learned to identify the body’s midlines for proper measurements.
• The physical therapist checked if the patient’s spine was aligned with the body’s midlines.
• Artists often use midlines as reference points when drawing human figures.
• The medical chart showed deviations from the normal midlines.
• Radiologists examine X-rays to see if organs are positioned correctly relative to the midlines.