Definitions for "ISOPLETH"
A line connecting points of equal ozone concentrations.
Lines on a graph connecting points of constant value; e.g., isopleths of visibility are lines of equal visibility.
A broad term for any line on a weather map connecting points with equal values of a particular atmospheric variable (temperature, dew point, etc.). Isotherms, isotachs, etc. are all examples of isopleths.
A method of showing data on a graph which is commonly used in determining yield-per-recruit.