, in the Doctrine of Annuities, is the number of years in which the simple interest of any principal sum will amount to the same as the principal itself. Or it is the quotient arising by dividing 100, or any other principal, by its interest for one year. Thus, the Perpetuity, at the rate of 5 per cent. interest, is ; at 4 per cent. ; &c.
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Entry taken from A Mathematical and Philosophical Dictionary, by Charles Hutton, 1796.
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