Question: when do meredith and derek officially adopt zola?
Answer: Season 8, Episode 10: Adopting Zola. Welcoming Zola into the family marks a new chapter in Meredith's life. During Zola's adoption process, Meredith and Derek spend some time apart. Meredith's career is also on the rocks — she recently gets fired for altering the Alzheimer's clinical trial to help Dr.