Isogloss

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Isogloss

 

in linguistic geography, a line on a map designating the distributional boundaries of a given linguistic phenomenon (phonetic, morphological, syntactic, lexical). For example, an isoglossal line can be drawn showing the distribution of the word gomonit’ (“to din”) in the meaning of govorit’ (“to talk”) in the southwestern regions of the RSFSR, and for the Indo-Iranian languages it is possible, with the aid of an isogloss, to mark the areas that use enclitic pronouns in a subjective, objective, or attributive function. Along with the general term “isogloss” there are also specific terms such as isophone (an isogloss showing the distribution of a sound) and isosyntagm (an isogloss showing the distribution of a syntactic phenomenon).

References in periodicals archive ?
50) Notwithstanding the absence of parallel words, yagah alone makes a strong case for Gurgani to be placed on the conservative side of the isoglottic split.
For instance, Kurdish and Baluchi, in some of their most innate strata, share with Persian the isoglottic sound changes *kw > s, *tr > s, *dw > d, corresponding to the characteristically NW sp, (h)r, b, respectively.