: 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
His brain had also shifted 4 millimeters from the midline.
—
Ed Stannard, Hartford Courant, 4 Mar. 2024
The top has a V-neckline, three-quarter-length sleeves, and ruffle detailing along the collar and midline.
—Clara McMahon, Peoplemag, 9 May 2024
For the chest and shoulders, the main movement is moving the extended arm toward the midline, resisting the movement by placing the forearm of the bad arm against an immovable object like a door jamb.
—Bryant Stamford, The Courier-Journal, 2 May 2024
Always keep the belly pulled in, rather than doing any movement that pushes it out (and causes the telltale bulge on the midline).
—Alesandra Dubin, Parents, 27 Feb. 2024
See all Example Sentences for midline 
Ed Stannard, Hartford Courant, 4 Mar. 2024
The top has a V-neckline, three-quarter-length sleeves, and ruffle detailing along the collar and midline.
—Clara McMahon, Peoplemag, 9 May 2024
For the chest and shoulders, the main movement is moving the extended arm toward the midline, resisting the movement by placing the forearm of the bad arm against an immovable object like a door jamb.
—Bryant Stamford, The Courier-Journal, 2 May 2024
Always keep the belly pulled in, rather than doing any movement that pushes it out (and causes the telltale bulge on the midline).
—Alesandra Dubin, Parents, 27 Feb. 2024
See all Example Sentences for midline
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'midline.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near midline
Cite this Entry
“Midline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/midline. Accessed 3 Jul. 2024.
Copy CitationKids 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
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