from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The ratio at which the unit of currency of one country is or may be exchanged for the unit of currency of another country.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the charge for exchanging currency of one country for currency of another
Sorry, no etymologies found.
Of the great advocate of the Ballot, George Grote,  he says ” “Mr. Grote knows the relative values of gold and silver; but by what moral rate of exchange is he able to tell us the relative values of Liberty and Truth?”
The rate of exchange was that established by Pankburn with One-Eye.
The order on the treasury about the rate of exchange was given by Kinsky previous to his consent to pay me my salary in Einloesung Schein, as the documents prove; indeed it is only necessary to examine the date to show this, so the first instruction is of importance.
During the fluctuating state of the Assignats of France, I must ask the favor of you to inform me in every letter of the rate of exchange between them & coin, this being necessary for the regulation of our custom houses.
Yet the fact is that the high rate of exchange and the depredatory U-boat represented almost identically the same danger.