Many phonological changes found frequently in the natural development of languages are metaplasms:
In rhetoric, metaplasm is the modification of word order for emphasis.
In the grammar of the Romance languages, metaplasm may refer to change in the grammatical gender of nouns from their original gender in Latin.
From Greek μεταπλασμός, from μεταπλάσσειν "mold into a different shape." /wiki/Ancient_Greek ↩
Haraway, Donna. The Companion Species Manifesto. Chicago: Prickly Paradigm Press. p. 20. /wiki/Donna_Haraway ↩