Abstract
The entry of “concept” into the modern general scientific thesaurus and into the language of everyday life is considered. For the first time the author applies the notion “ingression” to this process. It is alleged that in the conditions of changing classical paradigms the introduction of new terminology, in particular, “concept” was inevitable. It is shown that the diversity of opinions about the concept is a manifestation of the creative nature of linguistics. A parallel is made with the entry of the term “text” into the scientific thesaurus. A conclusion is drawn on the transformation of “the scientific fashion” on the concept into the stable scientific trend.