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Definition of isogloss noun from the Oxford Advanced Learner's Dictionary

isogloss

noun
 
/ˈaɪsəɡlɒs/
 
/ˈaɪsəɡlɑːs/
(linguistics)
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  1. a line on a map that separates places where a particular feature of a language is different
    Word Originearly 20th cent.: from iso- ‘equal’ + Greek glōssa ‘tongue, word’.
See isogloss in the Oxford Advanced American Dictionary
trait
noun
 
 
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