1. to vary together; to change in a related or coordinated way
Usage: technical; statistics and mathematics

Examples

• In the study, student test scores and attendance rates covary positively.
• Temperature and ice cream sales covary during the summer months.
• The two variables covary in such a way that when one increases, the other tends to decrease.
• Researchers found that stress levels and sleep quality covary inversely.
• Height and weight covary in the population, though not perfectly.