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tellurium

tel·lu·ri·um

tellurium

 
pronunciation:
t lu ri m
part of speech: noun
definition: a chemical element that has fifty-two protons in each nucleus and that is usu. found in compounds, but that can be isolated as a toxic, brittle, silver-white crystal sometimes used in alloys with lead, copper, or iron to increase hardness and machinability. (symbol: Te)