A verification that something is true or has happened.
An official indicator that things will happen as planned.
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.
An empirical test of the suitability or effectiveness of a method or thing by running it at least once.
An empirical test of the suitability or capability of a person or actor by letting him perform at least once.