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					 			      	Koine Language - Wikipedia, the free encyclopedia
					 			      	 
 In linguistics, a koiné language is a standard language or dialect that has arisen as a result of contact between two or more mutually intelligible varieties (dialects) of the same language https://en.wikipedia.org/wiki/Koin%C3%A9_language
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					 			      	Dialect Levelling - Wikipedia, the free encyclopedia
					 			      	 
 Dialect levelling or dialect leveling refers to the assimilation, mixture and/or eradication of certain dialects, often due to language standardization. https://en.wikipedia.org/wiki/Dialect_levelling
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					 			      	Dialectology - Wikipedia, the free encyclopedia
					 			      	 
 Dialectology is the scientific study of linguistic dialect, a sub-field of sociolinguistics. It studies variations in language based primarily on geographic distribution and their associated features. https://en.wikipedia.org/wiki/Dialectology
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					 			      	Definition and Examples of Linguistic Variation - About
					 			      	 
 Regional, social, or contextual differences in the ways that a particular language is used. http://grammar.about.com/od/il/g/linguisticvariationterm.htm
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					 			      	Linguistics/Typology - Wikibooks, Open Books for an Open World
					 			      	 
 Languages can be classified based on different kinds of criteria. The most common are based on phonological, morphological, or syntactical criteria. https://en.wikibooks.org/wiki/Linguistics/Typology
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					 			      	Language and Linguistics: Language Change - NSF - National Science Foundation
					 			      	 
 In some ways, it is surprising that languages change. After all, they are passed down through the generations reliably enough for parents and children to communicate with each other. https://www.nsf.gov/news/special_reports/linguistics/change.jsp
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					 			      	Language Variation and Change - Linguistic Society of America
					 			      	 
 What kinds of language change are there? First, there's vocabulary change. Slang terms, in particular, come and go every few years. http://www.linguisticsociety.org/resource/language-variation-and-change
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					 			      	Isogloss Dictionary Definition - Isogloss Defined
					 			      	 
 isogloss definition: The definition of an isogloss is a line on a map that marks the boundary between areas where language features are different. http://www.yourdictionary.com/isogloss
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					 			      	Dialectology - Definition and Examples
					 			      	 
 Dialectology is the scientific study of dialects, or the regional differences in a language. http://grammar.about.com/od/d/g/Dialectology.htm
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					 			      	Dialectology - Linguistics - Britannica
					 			      	 
 The study of dialects. Variation most commonly occurs as a result of relative geographic or social isolation and may affect vocabulary, grammar, or pronunciation (accent). http://www.britannica.com/science/dialectology