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geometric mean

noun, Mathematics.
the mean of n positive numbers obtained by taking the n th root of the product of the numbers:
The geometric mean of 6 and 24 is 12. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for geometric-mean

geometric mean

the average value of a set of n integers, terms, or quantities, expressed as the nth root of their product Compare arithmetic mean
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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geometric-mean in Medicine

geometric mean n.
The nth root, usually the positive nth root, of a product of n factors.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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geometric-mean in Science
geometric mean  
The positive nth root of the product of a set of n numbers. For example, the geometric mean of 2 × 3 × 6 × 8 is the 4th root of 288, or approximately 4.12.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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