- (in the study of the geographical distribution of dialects) a line on a map marking the limits of an area within which a feature of speech occurs, as the use of a particular word or pronunciation.
Origin of isogloss
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a line drawn on a map around the area in which a linguistic feature is to be found, such as a particular pronunciation of a given word
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