Diachrony (noun) Definition, Meaning & Examples

noun, plural di·ach·ro·nies.

the study of a linguistic system through comparison of different points in its history; a diachronic approach to language study: The analysis emphasizes diachrony as a means for understanding sound systems.
change or development in a linguistic system over a period of time: The diachrony of the language suggests that the bare form was the original.