Denominal prepositions of reason as the linguistic means of the expression of the key concept “reason” in the Russian linguistic consciousness

The article deals with the role of the denominal prepositions of reason in the detailing of the key concept “reason” in the Russian linguistic consciousness. The results of the study showed that the continued process of the addition of the composition of the prepositions of reason by means of the prepositional character of the prepositional - nominal combinations opens the possibilities both for the preservation of the most important semantic components of the concept “reason” and the expression of the new aspects of the causal semantics.