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/səˈmɛə.ɹi.əm/ · noun
A chemical element (symbol Sm) with an atomic number of 62, a moderately hard silvery metal that slowly oxidizes in air. Applications in human affairs include magnets with high performance at high temperatures, which are important in military equipment..
Use samarium 153 when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Samarium 153 means A chemical element (symbol Sm) with an atomic number of 62, a moderately hard silvery metal that slowly oxidizes in air. Applications in human affairs include magnets with high performance at high temperatures, which are important in military equipment..
Common synonyms include sm, atomic number 62.
The opposite depends on the specific sense.
Use samarium 153 where its definition matches the intended context.
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