rate(redirected from concordance rate)
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a. a price or charge with reference to a standard or scale
b. (as modifier): a rate card
2. a charge made per unit for a commodity, service, etc.
3. a wage calculated against a unit of time
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
(science and technology)
The amount of change of some quantity during a time interval divided by the length of the time interval.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.