confirmation

noun

1. 1

   a sacrament admitting a baptized person to full participation in the church

2. 2

   a ceremony held in the synagogue (usually at Pentecost) to admit as adult members of the Jewish community young men and women who have successfully completed a course of study in Judaism

3. 3

   additional proof that something that was believed (some fact or hypothesis or theory) is correct

   fossils provided further confirmation of the evolutionary theory

4. 4

   information that confirms or verifies

5. 5

   making something valid by formally ratifying or confirming it

   the ratification of the treaty

   confirmation of the appointment