In telecommunication, the term justify has the following meanings:

justification in typesetting, i.e. To align text horizontally or vertically so that the first and last characters of every line, or the first and last line of the text, are aligned with their corresponding margins.

To shift the contents of a register or a field so that the significant character at the specified end of the data is at a particular position.

In mathematics, the term justify means to prove the validity of a claim using an accepted method of proof. See Mathematical proof.

This article contains material from the Federal Standard 1037C, which, as a work of the United States Government, is in the public domain.