Definify.com
Webster 1913 Edition
Rationale
Raˊtion-a′le
(răshˊŭ-năl′ or răshˊŭn-ā′lē̍)
, Noun.
An explanation or exposition of the principles of some opinion, action, hypothesis, phenomenon, or the like; also, the principles themselves.
Webster 1828 Edition
Rationale
RATIONA'LE
, n.1.
A detail with reasons; a series of reasons assigned; as Dr. Sparrow's rationale of the Common Prayer.2.
An account or solution of the principles of some opinion, action, hypothesis, phenomenon, &c.