(n): the rate of increase in size per unit time
(n): a one-to-one mapping of one metric space into another metric space that preserves the distances between each pair of points
(n): (mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function)
(n): equality of elevation above sea level
(n): distance of something above a reference point (such as sea level)
(n): equality of measure (e.g., equality of height above sea level or equality of loudness etc.)
(n): the quality of being the same in quantity or measure or value or status
