1. to encourage the development or growth of something
2. to care for a child who is not one’s own biological child, typically through an official arrangement

1. relating to the care of children by people who are not their biological parents

Examples

• The school aims to foster creativity in its students.
• Good communication helps foster strong relationships.
• They decided to foster three children from the local agency.
• She grew up in several foster homes.
• The foster parents provided a loving environment.
• The program fosters international cooperation.
• He spent two years with his foster family.