- Rationale is defined as the reasoning behind a decision or something.
An example of rationale is a CEO’s explanation of why business changes are being made.
- the fundamental reasons, or rational basis, for something
- a statement, exposition, or explanation of reasons or principles
Origin of rationaleMedieval Latin ; from Classical Latin neuter of rationalis, rational
Origin of rationaleLate Latin ratiōnāle, from neuter of Latin ratiōnālis, rational; see rational.
A Latin translation of the Ancient Greek λόγιον (logion) for the Hebrew חֹשֶׁן (hoshen) by St. Jerome, referring to the sacred breastplate worn by the High Priest of the Israelites, according to the Book of Exodus.