A complementary good or service is something used or provided in combination with another good or service. The word complementary means combining to enhance or emphasize each other's qualities.

When forming a team, the ideal is to balance the skills of one team member with the complementary abilities of others. In this way, each team member plays to his unique strengths, such as strategy, ...

Integrative medicine (IM) is an approach that combines conventional medicine with complementary treatments. The aim of IM is to treat the whole person, not just a health problem. Because IM is ...