Justification comes from the Latin ratio, which means “reason,” and rationalizes, “endowed with reason.” Ratio is a somewhat colloquial English word for the relationship (in number, quantity or degree) between things. A discussion of why a decision was made. Rationales document why the choice was made, how it was developed, what assumptions were used, and why the conclusion is realistic. Music theme by Joshua Stamper 2006 New Jerusalem Music/ASCAP Powered by Black`s Law Dictionary, Free 2nd©ed., and The Law Dictionary.