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fluorine dating

American  

noun

  1. a method of determining the relative age of fossil bones found in the same excavation by comparing their fluorine content.

Etymology

Origin of fluorine dating

First recorded in 1945–50

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