Definitions

1. noun

A line or curve on a graph that represents a constant value of a variable in a mathematical model, particularly in economics and geography.

“The isocline for the demand curve shows the price at which the quantity demanded is equal to the quantity supplied.”

2. noun

In ecology, a line or curve on a graph that represents a constant rate of change or a constant value of a variable in a population dynamics model.

“The isocline for the population growth rate shows the impact of environmental factors on the population’s growth.”