The 2D or 3D visualization of points that have the same value of a particular property and are connected together.
A map that shows the change in value of a variable over a geographic area through the use of contour
a map constructed with continuous lines connecting points of equal value, such as elevation, formation thickness, and rock porosity 
A map showing elevations and surface configuration by means of contour lines through points of equal elevation.
[n] - a map having contour lines through points of equal elevation
A map showing the intensity of radiation as a function of position. Each contour line corresponds to a specific intensity of radiation, with inner contours corresponding to higher intensities than outer contours. Therefore, a closed contour encircles a region where the intensity of the emitted radiation is greater than or equal to the intensity on ...
relief map noun a map having contour lines through points of equal elevation
a topographic map on which the shape of the land surface is shown by contour lines, the relative spacing of the lines indicating the relative slope of the surface.