the process of changing gradually from one condition or level to another.

a degree of variation or a stage in a change.

परिवर्तन में एक डिग्री या एक स्तर।

English Usage: There is a noticeable gradation in the quality of the samples.

Hindi Usage: नमूनों की गुणवत्ता में एक स्पष्ट चरणबद्धता है।