A Quick Guide to the Joret Line What is the Joret line? And why should I care about it? So, to begin, a definition: isogloss noun /ˈaɪsəɡlɒs/ /ˈaɪsəɡlɑːs/ (linguistics)a line on a map that separates places where a particular feature of a language is different The Oxford Advanced Learner’s Dictionary Named after the French historian and linguistContinue reading “La Joie de Joret”