Quantitative metathesis (or transfer of quantity) is a specific form of metathesis or transposition (a sound change) involving quantity or vowel length. By this process, two vowels near each other – one long, one short – switch their lengths, so that the long one becomes short, and the short one becomes long.
In theory, the definition includes both
- long-short → short-long
- short-long → long-short,
but Ancient Greek, which the term was originally created to describe, displays only the former, since the process is part of long-vowel shortening.
Read more about Quantitative Metathesis: Greek
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... die" undergoes vowel shortening, and quantitative metathesis in the oblique forms *τεθνηϝώτς tethnēwṓts → τεθνεώς tethneṓs "dead" (masculine ...