What is the meaning of Confirmation?

An official indicator that things will happen as planned.

A verification that something is true or has happened.

A ceremony of sealing and conscious acknowledgement of the faith in many Christian churches, typically around the ages of 14 to 18; considered a sacrament in some churches, including Catholicism, but not in most Protestant churches.

An act whereby something conditional or voidable is made sure and unavoidable, especially the possession of an estate.

confirmation (all senses)

confirmation, verification

alternative form of confirmacioun

Source: wiktionary.org