| Engelsk navneord: atomic number 72 | |||
| 1. | atomic number 72 (om masse el. substans) a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons | ||
| Termer med samme betydning (synonymer) | hafnium, Hf | ||
| Mindre specifikke termer | metal, metallic element | ||