Dialect

A particular form of a language spoken in a specific region or by a specific group.

From Greek 'dialektos' meaning 'conversation' or 'way of speaking,' built from 'dia' (between) and 'legein' (to speak). Originally, it simply meant any conversation between people, not a regional variation. Ancient Greeks used it to describe how different city-states like Athens and Sparta had their own ways of talking, but saw these as equally valid forms of Greek.