midline

noun

mid·​line ˈmid-ˌlīn 

-ˈlīn

: a median line

especially : the median line or median plane of the body or some part of the body

Examples of midline in a Sentence

Recent Examples on the Web

The bands stopped precisely at the midline of her body, and the pigmentation of her right side was entirely normal. — Jerome Groopman, New Yorker, 6 Apr. 2026

With wide sleeves and loose-fitting trousers, the knotted center helps create an hourglass silhouette along your midline. — Ariel Bielsky, InStyle, 24 June 2026

These studies repeatedly identified activity along the cortical midline from front to back. — Masud Husain, Time, 15 Apr. 2026

The stomach is located on the left side of the midline, so this position encourages food to pass more easily from the small intestine to the large intestine, which may help remedy or prevent an upset stomach. — Caitlin Carlson, SELF, 13 Feb. 2026

Word History

First Known Use

14th century, in the meaning defined above

Rhymes for midline

• affine
• airline
• align
• aline
• assign
• baseline
• beamline
• benign
• bloodline
• bovine
• brucine
• byline

Kids Definition

midline

noun

mid·​line ˈmid-ˌlīn 

: a line through the middle of something

especially : a line through a body or one of its parts that lies in a plane dividing it into halves that are mirror images of each other

Medical Definition

midline

noun

mid·​line ˈmid-ˌlīn, ˌmid-ˈlīn 

: a median line

especially : the median line or median plane of the body or some part of the body