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center line

center line

5 3.4
A line that divides a shape into two equal parts
  • noun
  • /ˈsɛntər laɪn/
  • US
translation icon : línea central
  • We began to drift across the center line into the oncoming lane.

Examples

  • The architect drew a center line down the middle of the floor plan to help visualize the layout.

  • When everything was firmly in place, I was to measure the deviation of the jagged line from the center line every quarter of an inch and then plot the readings on a chart.

    Fiction book (1990)
  • Mark your new center line and then cut to that.

  • Stay off the center line, take an angle.

  • And I'm going to get level on that center line as best as I can.

  • Line up the 1/4 mark of your ruler with that same center line and draw a line down all your squares.

    Blog text (32)
  • Here stresses as a function of the distance from the center line in inches.

  • Her beloved St. Ann's Church had been used to sight the bridge's center line.

    Fiction book (1995)
  • Witnesses say one car crossed the center line and ran head-on into an oncoming bus killing the driver instantly.

  • The design of the artwork required a precise center line to ensure symmetry and balance.

Synonyms

midline
vscenter line
  • Specialized
7 5.3

A line you imagine that divides the body into left and right halves

refers to dividing flat figures rather than anatomical halves
centerline
vscenter line
  • Specialized
2 3.9

A line that divides a shape or road into two equal parts through its middle

has identical meaning but is written as two separate words
bisector
vscenter line
  • Specialized
5.4

A line or plane that divides something into two equal parts

applies specifically to planar figures split through their center

Surface Forms

center line singular
center lines plural
centre lines plural
centre line singular

Morphology

center + line

The meaning is directly and transparently derived from combining 'center' (middle point) with 'line' (a division or mark); a B1 learner who knows both words can infer a line located at the center that divides a figure. This noun–noun compositional pattern is common cross-linguistically and uses frequent, concrete words, so the sense is immediately comprehensible from the constituents.

Etymology

The compound noun center line comes from the simple picture of a center marked by a line drawn down the middle of a page or shape. When you fold paper or draw this line to find the 'middle', you get two equal halves, so center line means 'a line that divides something into two equal parts'.