geometric-mean

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.
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Collins
World English Dictionary
geometric mean
 
n
Compare arithmetic mean the average value of a set of n integers, terms, or quantities, expressed as the nth root of their product

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

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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American Heritage
Science Dictionary
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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