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centerline

[sen-ter-lahyn] /ˈsɛn tərˌlaɪn/
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.
Origin of centerline
1800-1810
1800-10; center + line1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for centerline
  • The localizer provides runway centerline guidance to aircraft.

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