• WordNet 3.6
    • n 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"
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Webster's Revised Unabridged Dictionary
    • n Rationale An explanation or exposition of the principles of some opinion, action, hypothesis, phenomenon, or the like; also, the principles themselves.
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Century Dictionary and Cyclopedia
    • n rationale The rational basis or motive of something; that which accounts for or explains the existence of something; reason for being.
    • n rationale A rational explanation or statement of reasons; an argumentative or theoretical account; a reasoned exposition.
    • n rationale Same as rational, 2.
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Chambers's Twentieth Century Dictionary
    • ns Rationale a rational account of anything, with reasons for its existence: a theoretical explanation or solution
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Webster's Revised Unabridged Dictionary
L. rationalis, neut. rationale,. See Rational (a.)


In literature:

The rationale of contradictory opinions may with equal confidence be sought in history.
"Harvard Classics Volume 28" by Various
As to the cause and rationale of these pain-lines, only the barest outlines can be given.
"Preventable Diseases" by Woods Hutchinson
Mental healing, then, is the rationale of the cures.
"Three Thousand Years of Mental Healing" by George Barton Cutten
The weight of human authority is always powerless, and ought to be, where the intelligence is denied a rationale.
"Natural Law in the Spiritual World" by Henry Drummond
They must have it, by the whole reason and rationale upon which the thing depends.
"Eugenics and Other Evils" by G. K. Chesterton
I am not aware that a better rationale can be given of the action of other remedies.
"Hydriatic treatment of Scarlet Fever in its Different Forms" by Charles Munde
In his impetuosity, we find the rationale of much that is peculiar in the style of Dr. Chalmers.
"Spare Hours" by John Brown
There remains, then, as the only intelligible rationale of solar sustentation, Helmholtz's shrinkage theory.
"A Popular History of Astronomy During the Nineteenth Century" by Agnes M. (Agnes Mary) Clerke
The Rationale of the Conventional.
"Art in Needlework" by Lewis F. Day
The rationale of magic, when a combination of skill and fraud imposed upon the vulgar, is easily settled.
"The International Monthly, Volume 3, No. 2, May, 1851" by Various

In news:

Obama describes rationale for Afghanistan Dec 14: 60 Minutes' Lesley Stahl joins the Morning Joe panel to discuss the interviews with the president over the weekend.
The rationale expressed by sponsor Bryan Zak is that the estimated $700,000 in revenue could be added back into the budget to spend on necessary city business.
Budget debates omit programs' rationale.
That rationale would sound better in a bill which wouldn't raise the speed limit, a move that arguably would not improve highway safety.
Janvrin questions rationale for being fired.
Any attempt to try and differentiate the hate that took the lives of six million European Jews during the Holocaust from the current vision that seeks the murder of six million Israeli Jews provides a rationale for Islamist extremism.
Lance Shearer/Eagle Correspondent Fire-Rescue Chief Mike Murphy presents the rationale for the new boat.
"We don't innovate here" – Google's curious UK tax rationale .
Phil Boyle offers a regional rationale , LI vs NYC.
Rationale for Using Biological Indicators.
Dalton McGuinty's rationale for shuttering legislature makes no sense: Walkom.
Teaching with Laptops Laptop Rationale .
The value of comprehensive rationale information for documenting a design has long been recognized.
However, detailed rationale is rarely produced in practice because of the substantial time investment required.
Clinton criticizes Bush wiretap rationale .

In science:

The rationale is that c(xo ) measures the similarity between the source profile with a section of y (x) centered at xo ; a peak in c(xo ) is an indication of a source signal at xo .
On Optimal Detection of Point Sources in CMB Maps
Rationale for the structure of the resonator.
Coherent Random Lasing and "Almost Localized" Photon Modes
The rationale behind this remarkable result is the Duistermaat–Heckman theorem [109].
Random matrix theory and symmetric spaces
We shall first present the rationale for this new definition and compare it briefly with the forms already being used.
A New Nonextensive Entropy
The rationale for the recursion relation (4) is as follows.
Hysteresis in Ferromagnetic Random Field Ising Model with an Arbitrary Initial State