Article opens the concept maintenance transterminologization closely connected with common lexicon. In transterminologization and inner enriching tropes actively participate: a metaphor, метонимия and functionality. These tropes are one of the basic ways of enrichment of terminological systems. Besides it, in article the detailed analysis semantic reconsideration, is carried out more precisely, desemantization the terms of one branch becomes the important lever of completion of "a missing verbal link» other branch of a science and techniques. It also proves universality of those values or other terms and lexemes. As a result of similar linguistic "operation" there is a process inner enriching various terminological systems.