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fineness ratio

American  

noun

  1. Aeronautics. the ratio of the length of a streamlined body, as a rocket or airplane hull, to its maximum diameter.

  2. Rocketry. aspect ratio.

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Metals | Weight, grains | Fineness |Ratio to gold 1.

From Project Gutenberg

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.