Rationale


[rash-uh-nal] /ˌræʃ əˈnæl/

noun
1.
the fundamental reason or reasons serving to account for something.
2.
a statement of reasons.
3.
a reasoned exposition of principles.
/ˌræʃəˈnɑːl/
noun
1.
a reasoned exposition, esp one defining the fundamental reasons for a course of action, belief, etc
n.

1650s, “exposition of principles,” from Late Latin rationale, noun use of neuter of Latin rationalis “of reason” (see rational). Hence, “fundamental reason” (1680s).

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