amino-acid dating

[uh-mee-noh as-id, am-uh-noh-]

a·mi·no-ac·id dat·ing

[uh-mee-noh as-id, am-uh-noh-]
noun
a method used to date an organic geological or archaeological specimen, as a fossil or mummified body, by determining how much change has occurred in the amino-acid structure of that specimen.

Origin:
1970–75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Amino-acid dating has a plethora of syllables.
So is sesquipedalianism. Does it mean:
given to using long words.
(used as a nonsense word by children to express approval or to represent the longest word in English.)
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