co-parentverb [ I or T ]
to be one of the people that takes responsibility for raising a child, especially when you are not the biological parent or you do not live with the child all of the time:
I was in a long-term relationship with another woman and we decided to co-parent.
We help separated couples to agree how best to co-parent the children.
co-parentnoun [ C ]
one of the people who takes responsibility for raising a child, especially one who is not the biological parent or does not live with the child all of the time:
Today, the majority of same-sex adoption cases involve a biological parent and a non-biological co-parent.