Other forms: co-parenting; co-parents; co-parented
When two people raise a child together, they co-parent. This word is also a noun, so you can describe the people who co-parent as co-parents.
If you grew up with two parents, they co-parented you, working together to nurture and care for you as you grew. This word is commonly used for divorced or separated people as a way to emphasize the ongoing collaboration between parents, even when they are no longer a couple. The earliest known use of co-parent was in the 1970s, with the prefix co- meaning "together."