strontium 90   (TTS Sound)

The strontium_90 has 1 Senses.

• strontium 90
• a radioactive isotope of strontium (with the mass number 90) that is present in the fallout from nuclear explosions; can be assimilated like calcium into bones
• ストロンチウム（質量数90）の放射性同位元素で、核爆発の放射性降下物の中に含まれる