Terminological study of Nueba ymbención y demonstración de la quadratura del círculo of Diego Arias de Tavoada (1646) This geometrical treatise, entitled Nueba ymbención y demonstración de la quadratura de el círculo, was inspected in the files and catalogues of the Brussels Royal Albert I Library. Its first value is that has not been described by specialists. This work also proves the contribution of the Flemish publishers to spread the scientific production about various aspects during the 16th and 17th centuries, not only of literature or dictionaries and grammars, but the scientific works that were attended by the typesetter from Antwerp. With the study of this treatise we intend to show the enormous interest that the analysis of the scientific language acquire for the history of the Spanish language
