Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun strontium_90

1 sense of strontium 90

Sense 1
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)
       => strontium, Sr, atomic number 38 -- (a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite)