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representative fraction[¦rep·ri¦zen·təd·iv ′frak·shən]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The ratio between map or photo distance and ground distance expressed as a fraction in the same unit of measurement. It is one of the methods of indicating scale and is written as 1/1,000,000 for a million-map, etc.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved