The degree of steepness or incline of something, often used in meteorological contexts.

ढलान

English Usage: The gradients on the map indicated areas of heavy rain.

Hindi Usage: मानचित्र पर ढलानों ने भारी वर्षा वाले क्षेत्रों का संकेत दिया।

The measure of how much rain falls over a certain area and time period.