or co·par·ent

[noun koh-pair-uh nt, -par-, koh-pair-, -par-; verb koh-pair-uh nt, -par-]
verb (used with object)
  1. to share equally with another parent in the care of (a child).
verb (used without object)
  1. to act as a co-parent. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for co-parent

Contemporary Examples of co-parent