atomic number 38 | | |
n. (substance) | 1. atomic number 38, sr, strontium | a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite. |
| ~ metal, metallic element | any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.. |
| ~ 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. |
| ~ celestite | a mineral consisting of strontium sulphate. |
| ~ strontianite | a mineral consisting of strontium carbonate. |
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