Autonomous Height The height of a mountain which belongs entirely to that mountain and no higher mountain. This was the Canadian term term for "Prominence". null

Base Contour The lowest contour on a mountain which completely surrounds that mountain, and no higher mountain. null

Cell A "prominence cell" is an area of land containing one mountain of a given prominence threshold. For example, North America breaks into 12 "P3000" cells. Prominence Cells and Boundaries

Cell Map A cell map divides an area according to a fixed mountain prominence. Eg: A P3000 cell map of North America. See Cell Maps

Clean Promience An old term for pessimistically estimated prominences. See Estimated promience

Cluster A mountain with a prominence of at least 300m, and all of the lesser prominence peaks that go to it within 5 km. null

Contour Parent (True Parent) The lowest peak which has a contour line completely surrounding a given peak. null

Estimated Prominence A prominence value which is estimated from contour lines, not surveyed heights, according to one of three methods: optimistic, pessimistic or interpolated. null

Highest Mountains Highest mountains null

Isolation The great circle distance in kilometers to the "line parent". null

Key Saddle The lowest point on the highest ridge connecting a given peak to a higher peak. Key saddle defines the prominence. See Prominence

Line Parent The first higher peak on the prominence line of a given peak. See Line Parent. And also Mountain Hierarchies.

Lineage The hierarchial sequence of peaks above a given peak. null

Mountain An uplifted mass of land above a low lying area. See Mountain

Mountain Hierarchy An arrangement of mountains into levels, based on heights and prominences. Mountain Hierarchy

Mountain Prominence Regions The vertical separation between a given peak and the highest saddle connecting it to a higher peak. See Mountain Prominence

Mountain Range A collection of mountains with an official name on various government maps. See Mountain Range

Mountain Region An abbreviated term we use for Mountain Prominence Region. See Mountain Prominence Regions

Parent The peak above a given peak in the hierarchy. Three possible methods. null

Peak The top point of a mountain. Difference between a peak and a mountain is that "mountain" refers to the full land mass, whereas we use peak to refer only to the top. Definition of Mountain

Prominence The vertical separation between mountains. See Mountain Prominence

Prominence Line The highest ridge connecting a given peak to a succession of higher peaks. See Mountain Prominence

Prominence Region The area associated with a given mountain in a regional breakdown based on prominence. This is the short form for "mountain prominence region" See Prominence Regions.

Prominence Saddle The low point on the highest ridge connecting a given peak to a higher peak. Another term for the same thing is "key saddle". See Mountain Prominence

Range A "range" is a named group of mountains, usually separated from other mountains by low passes. See Mountain Range Definition See also: Hierarchy of Mountain Ranges

Region A mountain region is an area of land associated with a given mountain. Region Hierarchy for North America

Region Hierarchy An arrangement of mountain regions into a hierarchy. See Prominence Regions and Region Hierarchies

Saddle The lowest point between two peaks. "Pass" and "Col" are more specific terms. null

Source Parent The first peak on the prominence line that is both higher and has more prominence. See Source Parent. And also Mountain Hierarchies.

Subpeak A low prominence peak close to a significantly more major peak. null