Isogloss meaning

īsə-glôs, -glŏs
The definition of an isogloss is a line on a map that marks the boundary between areas where language features are different.

An example of an isogloss is the line on a map that shows the division of two populations which have different pronunciations for a a specific vowel.

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A geographic boundary line delimiting the area in which a given linguistic feature occurs.
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A line of demarcation between regions differing in a particular feature of language, as on a point of pronunciation, vocabulary, etc.
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A line indicating the geographical boundaries of a linguistic feature on a map.
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Such a line indicated on a map.
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Origin of isogloss

  • iso– Greek glōssa language, tongue

    From American Heritage Dictionary of the English Language, 5th Edition

  • From iso- +‎ gloss, ultimately from Ancient Greek ἴσος (isos, “equal”) and γλῶσσα (glōssa, “tongue”).

    From Wiktionary