: 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
While their primary job is adduction, pulling your legs toward the midline of your body — think squeezing your knees together — their overall function is far more expansive.
—
Dana Santas, CNN Money, 26 Sep. 2025
China has, in recent years, been ratcheting up pressure on Taiwan through near-daily sorties across the midline of the strait and large-scale military exercises aiming to punish the Beijing-skeptic Democratic Progressive Party government in Taipei.
—Micah McCartney, MSNBC Newsweek, 8 Sep. 2025
The visage on the right, also gilded above the midline and black below, greets us with notable features, potentially alluding to evolution.
—Natasha Gural, Forbes.com, 20 Aug. 2025
Focus on leg movement towards the midline to engage the adductors and enhance overall hip strength.
—Sixteen Ramos, USA Today, 12 Aug. 2025
See All Example Sentences for midline
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Dana Santas, CNN Money, 26 Sep. 2025
China has, in recent years, been ratcheting up pressure on Taiwan through near-daily sorties across the midline of the strait and large-scale military exercises aiming to punish the Beijing-skeptic Democratic Progressive Party government in Taipei.
—Micah McCartney, MSNBC Newsweek, 8 Sep. 2025
The visage on the right, also gilded above the midline and black below, greets us with notable features, potentially alluding to evolution.
—Natasha Gural, Forbes.com, 20 Aug. 2025
Focus on leg movement towards the midline to engage the adductors and enhance overall hip strength.
—Sixteen Ramos, USA Today, 12 Aug. 2025
See All Example Sentences for midline
Cite this Entry
“Midline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/midline. Accessed 29 Oct. 2025.
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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