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The paper deals with problem of semantic dynamics of term under act of extra linguistic factors. Changes in the special scientific picture of the world of political science, by a result what transformation of semantic structure of term, origin of the new special meanings, neutralization of evaluation-expressive components, and also narrowing or expansion of meanings are studied. Influence of social changes on education and development of political science terminology are grounded.

The article investigates the interinfluence of the language and national scientific pictures of the world, which is revealed in the processes of terminologization and determinologization. Semantic changes that occur during metaphoric reinterpretation or metonymic shift in meanings used generally and meanings of terms existing in the language were analyzed. Peculiarities of newly created units were characterized as to the breadth of their meanings, presence or absence of estimating-expressive components.