释义 |
atomic number 87 ThesaurusNoun | 1. atomic number 87 - a radioactive element of the alkali-metal group discovered as a disintegration product of actiniumFr, franciummetal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
atomic number 87
Synonyms for atomic number 87noun a radioactive element of the alkali-metal group discovered as a disintegration product of actiniumSynonymsRelated Words |