Contour
From Glossary of Meteorology
contour
Generally, an outline or configuration of a body or surface.
Often, the term is used for one of a set of lines (contour lines) drawn to represent the configuration of a surface; this is the case in meteorology, where a contour usually refers to a contour line of constant height on a constant-pressure surface. Sometimes, the term is more loosely used in the general sense of an isopleth.
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