midline

[ mid-lahyn ]

/ ˈmɪdˌlaɪn /

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

Geometry. midsegment.

Origin of midline

First recorded in 1865–70; mid- + line¹

Nuchal: Width of anterior margin, 12 (estimated); greatest width, 37 (estimated); length at midline, 35 (estimated).

A New Extinct Emydid Turtle from the Lower Pliocene of Oklahoma |Edwin C. Galbreath
The red tips tend further to disrupt the body outline at the midline, or slightly posterior to this.

Phylogeny of the Waxwings and Allied Birds |M. Dale Arvey
Third vertebral scute: Length of anterior margin, 33; greatest width, 42; length at midline, 40 (estimated).

A New Extinct Emydid Turtle from the Lower Pliocene of Oklahoma |Edwin C. Galbreath
The aorta and vena cava, the heart area, and then a midline incision was made.

Warren Commission (3 of 26): Hearings Vol. III (of 15) |The President's Commission on the Assassination of President Kennedy

And they are both located approximately the same distance to the right of the midline of both garments.

Warren Commission (5 of 26): Hearings Vol. V (of 15) |The President's Commission on the Assassination of President Kennedy

midline

[ mĭd′līn′ ]

A medial line, especially the medial line or plane of the body.