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.

Pope Francis, seated next to Cardinal Gerhard Muller, prefect of the Vatican Congregation for the Doctrine of the Faith, discusses preservation of the family in Synod Hall at the Vatican Nov. 17 ...

Have you read Stephen Hawking’s A Brief History of Time? I ask because in physics, complementarity holds that to completely understand a phenomenon at an atomic level, one must be able to describe ...

THE principle of complementarity in education is articulated in Article XIV, Section 4 (1) of the 1987 Constitution, representing a notable educational concept absent from the 1935 and 1973 versions.