What is the meaning of Justification?

A reason, explanation, or excuse which someone believes provides convincing, morally acceptable support for behavior or for a belief or occurrence.

The forgiveness of sin.

The alignment of text to the left margin (left justification), the right margin (right justification), or both margins (full justification).

justification (reason, excuse, etc.)

justification (all senses)

Source: wiktionary.org