centerline

American  

[sen-ter-lahyn] / ˈsɛn tərˌlaɪn /

Or center line

noun

1. any line that bisects a plane figure.

   the centerline of a building plan.

2. a line along the center of a road or highway dividing it into separate sections for traffic moving in opposite directions.

3. Radio. the perpendicular bisector of the line connecting two radio transmitters.

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Etymology

Origin of centerline

First recorded in 1800–10; center + line ¹

Example Sentences

The captain was able to keep the airplane near the centerline of the runway, and 30 seconds after touchdown, the pedals began to operate normally.

From Seattle Times • Mar. 7, 2024

Other tools are conversions to green left-turn arrows, and yellow centerline curbs that protrude into the crossing, so drivers choose a slow, right-angled path.

From Seattle Times • Mar. 30, 2023

Among his financial victims was Arthur Badger, whose wife was killed by a UPS truck that crossed a centerline, leaving their six children without a mother.

From New York Times • Mar. 8, 2023

Shifting into fifth gear, I straddled the centerline to correct the bevel toward the borrow pit and accelerated into triple digits.

From Salon • Oct. 22, 2022

As it grew, so did my confidence, for my computer told me they were precisely on centerline as they overtook me.

From "Flying to the Moon: An Astronaut's Story" by Michael Collins