In dialectology, boundary lines on language maps that show the geographical spread of a certain word. In contrast, cf. isophones, which refer to the sound inventory. linguistic...

n. In dialectology, a line drawn on a map to represent the boundary between two competing linguistic...

An isogloss is the geographical boundary of a certain linguistic feature, e.g. the pronunciation of a vowel, the meaning of a word, or use of some syntactic feature. Major dialects are typically demarcated by whole bundles of isoglosses, e.g. the...