a rare, radioactive, metallic chemical element of the lanthanide series, atomic number 61, which was first produced artificially in a nuclear reactor and is present in trace amounts as a fission product in uranium ores, haruldaste muldmetallide hulka kuuluv radioaktiivne keemiline element, järjenr 61
a rare, radioactive, metallic chemical element of the lanthanide series, atomic number 61, which was first produced artificially in a nuclear reactor and is present in trace amounts as a fission product in uranium ores, haruldaste muldmetallide hulka kuuluv radioaktiivne keemiline element, järjenr 61
a rare, radioactive, metallic chemical element of the lanthanide series, atomic number 61, which was first produced artificially in a nuclear reactor and is present in trace amounts as a fission product in uranium ores, haruldaste muldmetallide hulka kuuluv radioaktiivne keemiline element, järjenr 61
promethium . EKI terminibaas Esterm. Институт эстонского языка, Сынавееб 2026. https://sonaveeb.ee/search/unif//esterm/promethium/1/eng (19.06.2026)