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midline

[ mid-lahyn ]
/ ˈmɪdˌlaɪn /
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noun

Zoology. the median plane of the body of an animal.
Geometry. midsegment.

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Origin of midline

First recorded in 1865–70; mid- + line1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Medical definitions for midline

midline
[ mĭdlīn′ ]

n.

A medial line, especially the medial line or plane of the body.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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