antimonial lead

(redirected from regulus metal)
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Noun1.antimonial lead - a lead alloy that contains about 5% antimony
atomic number 82, Pb, lead - a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey; "the children were playing with lead soldiers"
grid metal - a kind of hard lead that is used for grids in storage batteries