| ISA | ELEMENT-MATERIAL |
| ANCESTORS | ALL ELEMENT-MATERIAL MATERIAL OBJECT PHYSICAL-OBJECT |
| isótopo radiactivo | term type: main entry term number: singular part of speech: noun reliability code: 10 definition: variante de un elemento químico con el mismo número de electrones y neutrones pero diferente número de neutrones y propiedades radiactivas. (es) gender: masculine |
| radioisótopo | definition: ver isótopo radiactivo (es) gender: masculine number: plural part of speech: noun reliability code: 10 term type: main entry term |
| radioactive isotope | term type: main entry term number: singular part of speech: noun reliability code: 10 definition: variant of a chemical element with the same number of electrons and protons, but a different number of neutrons and radioactive properties. (en) |
| radioisotope | definition: see radioactive isotope (en) number: singular part of speech: noun reliability code: 10 term type: abbreviated form of term |