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contour line
(redirected from Halleyan lines)

   Also found in: Wikipedia 0.04 sec.
contour line
a line on a map or chart joining points of equal height or depth

contour line [′kän‚tu̇r ‚līn]
(mapping)
A map line representing a contour, that is, connecting points of equal elevation above or below a datum plane, usually mean sea level. Also known as contour; isoheight; isohypse.
(meteorology)
A line on a weather map connecting points of equal atmospheric pressure, temperature, or such.


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