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A height measuring how far a summit rises above its saddle.
Also known as: Topographic prominence, Relative height
Prominence measures how far a summit rises above the lowest contour that encircles it and no higher peak — in effect, how much you would have to descend before climbing something taller. It is what distinguishes an independent mountain from a shoulder of a larger one.
Measures a summit's height above the lowest saddle connecting it to any higher ground.
Contexts: Technical drawing, Maps
Distinguishes an independent summit from a subsidiary top, which is why hill lists are defined by prominence thresholds rather than by height alone.
Contexts: Technical drawing, Maps
A numeral in metres printed beside a summit name in a list, distinct from the summit's own elevation figure.