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midline

American  
[mid-lahyn] / ˈmɪdˌlaɪn /

noun

  1. Zoology. the median plane of the body of an animal.

  2. Geometry. midsegment.


Etymology

Origin of midline

First recorded in 1865–70; mid- + line 1


Vocabulary lists containing midline

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

In either case, its fibers cross the midline of the nervous system.

From Science Daily ● Nov. 4, 2026

"Australians can go from something that's kind of midline and relaxed and start to work with it, and the muscles respond in time."

From Barron's ● Mar. 5, 2026

If your pelvis sits at an angle—maybe because your legs are different lengths, maybe because you have scoliosis—the midline of the buttocks can tilt, and, boom, a crooked crack.

From Slate ● Feb. 22, 2026

“Right now, he’s just kind of living in the middle, the midline of the zone,” pitching coach Mark Prior said.

From Los Angeles Times ● May 26, 2025

John Bell, the superintendent, opened her abdomen with an incision in the midline.

From "The Gene" by Siddhartha Mukherjee

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