contour line

noun

1. a line joining points of equal elevation on a surface.

2. the representation of such a line on a map.

3. Mathematics.,  a line parallel to a trace.

contour line

noun

1. Often shortened to: contour. a line on a map or chart joining points of equal height or depth

contour line

1. A line on a map joining points of equal elevation above a given level, usually mean sea level.

2. ◆ The change in elevation between one contour line and the next is the contour interval.

Word History and Origins

Origin of contour line¹

First recorded in 1835–45

Example Sentences

Without a contour line out of place and a perfected walk in stilettos, she wooed the judges with her bold, glitzy and saucy looks.

From BBC

Had they studied a topographic map before buying this home, they could have seen from the contour lines how much land above them collected water, then funneled it to their lot.

From Seattle Times

It arcs along a contour line 2 feet below the typical low tide.

From Seattle Times

The rising contour line of the snow pile in the foreground continues into the background hill, which itself merges with the receding roof line of the tallest building.

From Washington Post

“It’s using the rainwater,” he explained, “using the contour lines, using your environment and nature to grow food.”

From Washington Post