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The fundamental reasons for something; the basis: the rationale for dropping the atomic bomb.
[Late Latin ratiōnāle, from neuter of Latin ratiōnālis, rational; see rational.]
a reasoned exposition, esp one defining the fundamental reasons for a course of action, belief, etc
[C17: from New Latin, from Latin ratiōnālis]
1. the fundamental reason or reasons serving to account for something.
2. a statement of reasons or principles.
[1650–60; < Latin: neuter of ratiōnālis rational]
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|Noun||1.||rationale - (law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature); "the rationale for capital punishment"; "the principles of internal-combustion engines"|
explanation - thought that makes something comprehensible
dialectics - a rationale for dialectical materialism based on change through the conflict of opposing forces
rationale[ræʃəˈnɑːl] n → fondamento logico
n. razón fundamental.