[en] In the TmSesub(1-x)Tesub(x) pseudobinary compounds a transition from semiconductor to metal (SMT) with intermediate Tm valence is observed in function of composition. The pressure induced SMT is investigated for TmSesub(0.17)Tesub(0.83) in a continuous measurement of the electrical resistivity and the specific volume on the same single crystal up to 3.5 GPa (= 35 kbar). The SMT around 2 GPa is continuous and above this pressure the Tm ions are in an intermediate valent metallic state. (author)