Abstract EN:

Biotechnology is a good ground to observe the meeting of technical and scientific vocabularies of various subject matters, and of engineering sciences. It needs biology, biochemistry, biophysics, and many technologies, some of them partly traditional, like fermentation, some others entirely new, like genetic engineering. In the case of biotechnology, an approach by "domains" is unefficient, and the theory of univocity is not relevant. Before any try at normalization, a perfect knowledge of the spoken realities and, practices is unavoidable. Aiming at that target, the thesis puts emphasis on two types of speeches, pedagogical discourse beetween specialists and students, and interface discourse as a link between laboratory and production.