1. keemiliselt mittektiivne metall; 2. sulam (taval. Ti-Zr-sulam), milles neutronite hajumine kiiritamisel on tähtsusetu, 1. a metal that is not chemically active and therefore not part of the chemical reactions; 2. alloy (usually Ti-Zr alloy) for which scattering of neotrons by nuclei is negligible